CVE-2026-73330

MEDIUMPre-NVD 6.66.6
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 6.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-12. A secondary CVSS source baseline 6.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-57431 (ENISA EUVD) · GHSA-xgmr-hcvf-x3qc (GitHub Security Advisories)Source: ENISA EUVD

6.6EG
EchelonGraph verdictMonitorNo release containing the referenced fix is confirmed: check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 6.6Exploit: None knownExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

CamaleonCMS 2.9.1 contains a server-side template injection vulnerability that allows authenticated administrators to execute arbitrary commands by embedding ERB tags in the email parameter of the test_email settings action, which are evaluated when an SMTP rejection reflects the recipient address back in the exception message rendered as an inline ERB template. Attackers can submit a crafted email parameter containing ERB expressions through the admin settings test_email endpoint, causing the Rails inline template renderer to evaluate attacker-controlled Ruby code and achieve arbitrary command execution as the Rails process user.

CVSS v3
6.6
EG Score
6.6MEDIUMmedium confidence
EG Risk
30
EG Risk 30/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity66% × 45%
Impact severity (EG Severity): CVSS 6.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.8% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.
EPSS PROB
0.8%
EPSS %ILE
56th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.6): severity, escalated by confirmed exploitation. This CVE's 6.6 is its impact severity (EG Severity), not escalated.

EG Severity
6.6 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-29). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 12, 2026

Last Modified

October 24, 2026

Advisory Details (3)

Auto-updated Aug 12, 2026
Fix referenced — no release confirmed yet.
Web page

CamaleonCMS 2.9.1 Server-Side Template Injection via test_email Action | Advisories | VulnCheck

https://www.vulncheck.com/advisories/camaleoncms-server-side-template-injection-via-test-email-action
Web page

From Easy HTB Machine to finding 8 zero-days | Enrik Mustafa

https://enrik-m.github.io/posts/Camaleon-CMS-Vulnerabilties/#44-stored-xss-via-draft-post-title
Web page

GitHub - owen2345/camaleon-cms: Camaleon CMS is a dynamic and advanced content management system based on Ruby on Rails · GitHub

https://github.com/owen2345/camaleon-cms

Vendor Advisories for CVE-2026-73330(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 48× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 181 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 81 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  4. 2026-10-29 16:59 UTCEG score recompute
  5. 2026-10-29 16:59 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  6. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  7. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  8. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  9. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  10. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  11. 2026-10-25 14:05 UTCEG score recompute
  12. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  13. 2026-10-24 15:29 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  14. 2026-10-23 19:32 UTCEG score recompute
  15. 2026-10-23 19:32 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  16. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  17. 2026-10-22 19:05 UTCEG score recompute
  18. 2026-10-22 19:05 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  19. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  20. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  21. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  22. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  23. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  24. 2026-10-18 03:15 UTCEG score recompute
  25. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.8% · 55th percentile
Show 75 more
  1. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  2. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  3. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  4. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  5. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  6. 2026-10-12 15:41 UTCEG score recompute
  7. 2026-10-11 19:26 UTCEG score recompute
  8. 2026-10-11 16:42 UTCEG score recompute
  9. 2026-10-11 14:01 UTCEG score recompute
  10. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  15. 2026-10-06 17:25 UTCEG score recompute
  16. 2026-10-06 17:24 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  17. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  20. 2026-10-04 22:29 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  21. 2026-10-03 19:57 UTCEG score recompute
  22. 2026-10-03 19:57 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  23. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  24. 2026-10-02 08:20 UTCEG score recompute
  25. 2026-10-02 08:20 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  26. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  27. 2026-09-30 21:54 UTCEG score recompute
  28. 2026-09-30 21:54 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  29. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  30. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  31. 2026-09-28 09:42 UTCEG score recompute
  32. 2026-09-28 09:42 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  33. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  34. 2026-09-27 09:53 UTCEG score recompute
  35. 2026-09-27 09:53 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  36. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  37. 2026-09-25 06:01 UTCEG score recompute
  38. 2026-09-25 06:01 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  39. 2026-09-24 06:13 UTCEG score recompute
  40. 2026-09-24 06:13 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  41. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  42. 2026-09-23 06:25 UTCEG score recompute
  43. 2026-09-23 06:25 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  44. 2026-09-22 06:37 UTCEG score recompute
  45. 2026-09-22 06:37 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  46. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  47. 2026-09-21 06:24 UTCEG score recompute
  48. 2026-09-21 06:24 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  49. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  50. 2026-09-20 04:17 UTCEG score recompute
  51. 2026-09-20 04:17 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  52. 2026-09-19 04:28 UTCEG score recompute
  53. 2026-09-19 04:28 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  54. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  55. 2026-09-18 04:40 UTCEG score recompute
  56. 2026-09-18 04:40 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  57. 2026-09-17 04:52 UTCEG score recompute
  58. 2026-09-17 04:52 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  59. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  60. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  61. 2026-09-16 05:04 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  62. 2026-09-15 04:20 UTCEG score recompute
  63. 2026-09-15 04:20 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  64. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  65. 2026-09-14 04:18 UTCEG score recompute
  66. 2026-09-14 04:18 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  67. 2026-09-13 04:30 UTCEG score recompute
  68. 2026-09-13 04:30 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  69. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  70. 2026-09-12 04:42 UTCEG score recompute
  71. 2026-09-12 04:42 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  72. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  73. 2026-09-11 04:52 UTCEG score recompute
  74. 2026-09-11 04:52 UTCGHSA enrichmentGHSA-xgmr-hcvf-x3qc · GitHub severity HIGH · GitHub CVSS 6.6
  75. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.6% · 46th percentile

Frequently asked(5)

What is CVE-2026-73330?
CVE-2026-73330 is a medium-severity vulnerability; its CVE record was published on August 12, 2026. CamaleonCMS 2.9.1 contains a server-side template injection vulnerability that allows authenticated administrators to execute arbitrary commands by embedding ERB tags in the email parameter of the test_email settings action, which are evaluated when an SMTP rejection reflects the recipient address…
When was CVE-2026-73330 made public?
CVE-2026-73330 was made public on August 12, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 12, 2026. EchelonGraph's copy of the record carries a last-modified date of October 24, 2026; the record at its source may have been updated since.
Is CVE-2026-73330 actively exploited?
CVE-2026-73330 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (56th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73330?
CVE-2026-73330 has a CVSS base score of 6.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73330?
A fix for CVE-2026-73330 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-73330 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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