CVE-2026-78555

CRITICALPre-NVD 9.49.4
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (36th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-65090 (ENISA EUVD) · GHSA-5vmw-j8f5-4j25 (GitHub Security Advisories)Source: ENISA EUVD

9.4EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

RansomLook exposed complete API keys in the HTML source of the authenticated /admin/apikeys administration page. Although the interface displayed only a shortened representation of each key, the full token was embedded in hidden form fields used by the enable/disable, private-access, and delete actions.

As a result, API credentials could be recovered by inspecting the page source or DOM. The credentials could also be unintentionally exposed through components that retain or inspect HTTP response bodies, such as debugging proxies, browser caches, monitoring systems, or other intermediaries. An attacker obtaining one of these tokens could subsequently authenticate using the privileges assigned to that key, including access to private data where the key was granted such permissions.

The patch removes API keys from subsequent page rendering and replaces them with SHA-256-derived opaque handles. Administrative actions submit only these handles, which are resolved back to the corresponding token on the server. The full API key is therefore disclosed only once, when it is initially created.

CVSS v3
9.4
EG Score
9.4CRITICALmedium confidence
EG Risk
42
EG Risk 42/100

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)
Severity94% × 45%
Impact severity (EG Severity): CVSS 9.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 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 available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
36th
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 (9.4): severity, escalated by confirmed exploitation. This CVE's 9.4 is its impact severity (EG Severity), not escalated.

EG Severity
9.4 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). 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.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 available. Apply it within your standard update timelines.

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.

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 24, 2026

Last Modified

October 12, 2026

Advisory Details (1)

Auto-updated Oct 2, 2026
Patch available. Sources: github_commit.
GitHub commit Patch Available

commit b358dfa4f40c (RansomLook/RansomLook)

Patch available: RansomLook/RansomLook 2.1.0 (contains commit b358dfa4f40c)

https://github.com/RansomLook/RansomLook/commit/b358dfa4f40c677a47c602ebbb4473aeae349f5c

Vendor Advisories for CVE-2026-78555(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 113× 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 421 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 321 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 20:41 UTCEG score recompute
  2. 2026-11-01 20:41 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  3. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  4. 2026-10-31 20:38 UTCEG score recompute
  5. 2026-10-31 20:38 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  6. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  7. 2026-10-30 20:34 UTCEG score recompute
  8. 2026-10-30 20:34 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  9. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  10. 2026-10-29 20:31 UTCEG score recompute
  11. 2026-10-29 20:31 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  12. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  13. 2026-10-28 20:28 UTCEG score recompute
  14. 2026-10-28 20:28 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  15. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  16. 2026-10-27 20:23 UTCEG score recompute
  17. 2026-10-27 20:23 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  18. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  19. 2026-10-26 20:20 UTCEG score recompute
  20. 2026-10-26 20:19 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  21. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  22. 2026-10-25 18:26 UTCEG score recompute
  23. 2026-10-25 18:26 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  24. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  25. 2026-10-25 14:00 UTCEG score recompute
Show 75 more
  1. 2026-10-24 18:17 UTCEG score recompute
  2. 2026-10-24 18:17 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  3. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  4. 2026-10-23 18:14 UTCEG score recompute
  5. 2026-10-23 18:14 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  6. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  7. 2026-10-22 17:59 UTCEG score recompute
  8. 2026-10-22 17:59 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  9. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  10. 2026-10-21 17:32 UTCEG score recompute
  11. 2026-10-21 17:32 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  12. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  13. 2026-10-20 17:29 UTCEG score recompute
  14. 2026-10-20 17:28 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  15. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  16. 2026-10-20 08:44 UTCEG score recompute
  17. 2026-10-20 08:44 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  18. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  19. 2026-10-19 08:38 UTCEG score recompute
  20. 2026-10-19 08:37 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  21. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  22. 2026-10-18 08:31 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  23. 2026-10-18 03:11 UTCEG score recompute
  24. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  25. 2026-10-17 06:59 UTCEG score recompute
  26. 2026-10-17 06:59 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  27. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  28. 2026-10-16 06:54 UTCEG score recompute
  29. 2026-10-16 06:54 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  30. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  31. 2026-10-15 05:36 UTCEG score recompute
  32. 2026-10-15 05:36 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  33. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  34. 2026-10-14 01:16 UTCEG score recompute
  35. 2026-10-14 01:16 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  36. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  37. 2026-10-12 21:25 UTCEG score recompute
  38. 2026-10-12 21:25 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  39. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  40. 2026-10-12 15:36 UTCEG score recompute
  41. 2026-10-12 05:25 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  42. 2026-10-11 19:22 UTCEG score recompute
  43. 2026-10-11 16:38 UTCEG score recompute
  44. 2026-10-11 13:57 UTCEG score recompute
  45. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  46. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  47. 2026-10-10 16:23 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  48. 2026-10-10 12:31 UTCEG score recompute
  49. 2026-10-10 12:31 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  50. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  51. 2026-10-09 08:18 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  52. 2026-10-09 04:41 UTCEG score recompute
  53. 2026-10-09 04:41 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  54. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  55. 2026-10-08 07:29 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  56. 2026-10-08 03:50 UTCEG score recompute
  57. 2026-10-08 03:50 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  58. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  59. 2026-10-07 10:25 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  60. 2026-10-07 06:38 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  61. 2026-10-07 03:01 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  62. 2026-10-06 23:24 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  63. 2026-10-06 19:47 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  64. 2026-10-06 16:10 UTCEG score recompute
  65. 2026-10-06 16:10 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  66. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  67. 2026-10-06 12:04 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  68. 2026-10-06 07:45 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  69. 2026-10-06 02:47 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  70. 2026-10-05 20:40 UTCEG score recompute
  71. 2026-10-05 20:40 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  72. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  73. 2026-10-05 17:04 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  74. 2026-10-05 12:22 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL
  75. 2026-10-05 08:44 UTCGHSA enrichmentGHSA-5vmw-j8f5-4j25 · GitHub severity CRITICAL

Frequently asked(5)

What is CVE-2026-78555?
CVE-2026-78555 is a critical-severity vulnerability; its CVE record was published on August 24, 2026. RansomLook exposed complete API keys in the HTML source of the authenticated /admin/apikeys administration page. Although the interface displayed only a shortened representation of each key, the full token was embedded in hidden form fields used by the enable/disable, private-access, and delete…
When was the CVE record for CVE-2026-78555 published?
The CVE record for CVE-2026-78555 was published on August 24, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 12, 2026; the record at its source may have been updated since.
Is CVE-2026-78555 actively exploited?
CVE-2026-78555 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-78555?
CVE-2026-78555 has a CVSS base score of 9.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-78555?
A fix for CVE-2026-78555 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-78555 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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