CVE-2026-18673

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (39th 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-2026-57398 (ENISA EUVD) · GHSA-jcrf-7pr5-jv5v (GitHub Security Advisories)Source: ENISA EUVD

5.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Fixed versions, as the CVE record's CNA (Kong Inc.) states them: "Upgrade to Kong Mesh 2.14.2."

When kuma-dp is configured with the Envoy admin API on a Unix domain socket, which is the default, its readiness service on TCP port 9902 - bound to all interfaces - forwards almost the entire Envoy admin API to any caller that can reach the port, with no authentication.

An attacker with network access to a data plane's port 9902, for example another pod on the cluster network, can read Envoy and data plane configuration without credentials: config dumps, cluster and listener lists, stats, and the mesh trust bundle. Exposure is read-only - destructive Envoy admin actions are blocked and private keys are not exposed.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

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)
Severity53% × 45%
Impact severity (EG Severity): CVSS 5.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 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 every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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
0.5%
EPSS %ILE
39th
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 (5.3): severity, escalated by confirmed exploitation. This CVE's 5.3 is its impact severity (EG Severity), not escalated.

EG Severity
5.3 MEDIUMCVSS-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
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-28). 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 every mission impact level.CISA BOD 26-04: 60 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 every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 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 partial (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 23, 2026

Advisory Details (4)

Auto-updated Aug 12, 2026
Patch available. Sources: github_pr, github.
Web page

Kong Mesh changelog - Kong Mesh | Kong Docs

https://developer.konghq.com/mesh/changelog/
GitHub pull request Patch Available

fix(kuma-dp): restrict readiness reporter to /ready (backport of #17317)

Patch available: kumahq/kuma v2.14.2 (PR #17418 merged 2026-07-16)

https://github.com/kumahq/kuma/pull/17418
GitHub pull request

fix(kuma-dp): restrict readiness reporter to /ready

Fix merged in kumahq/kuma PR #17317 on 2026-07-15 — awaiting tagged release

https://github.com/kumahq/kuma/pull/17317
GitHub advisoryMentions a patch (unverified)

kuma-dp readiness service exposes the Envoy admin API without authentication · Advisory · kumahq/kuma · GitHub

https://github.com/kumahq/kuma/security/advisories/GHSA-r9pv-x3pm-4r2w

Vendor Advisories for CVE-2026-18673(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 9× in last 7d / 45× 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 177 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 77 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  3. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  4. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  5. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  6. 2026-10-29 16:00 UTCEG score recompute
  7. 2026-10-29 16:00 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  8. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  9. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  10. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  11. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  12. 2026-10-25 14:45 UTCEG score recompute
  13. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  14. 2026-10-23 19:34 UTCEG score recompute
  15. 2026-10-23 19:34 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  16. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  17. 2026-10-23 05:59 UTCEG score recompute
  18. 2026-10-23 05:58 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  19. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  20. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  21. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  22. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  23. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  24. 2026-10-18 03:58 UTCEG score recompute
  25. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
Show 75 more
  1. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  2. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  3. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  4. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  5. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  6. 2026-10-12 16:27 UTCEG score recompute
  7. 2026-10-11 20:07 UTCEG score recompute
  8. 2026-10-11 17:20 UTCEG score recompute
  9. 2026-10-11 14:52 UTCEG score recompute
  10. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  11. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  12. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  13. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  14. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  15. 2026-10-06 17:25 UTCEG score recompute
  16. 2026-10-06 17:25 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  17. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  18. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  19. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  20. 2026-10-04 22:29 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  21. 2026-10-03 19:57 UTCEG score recompute
  22. 2026-10-03 19:57 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  23. 2026-10-02 08:20 UTCEG score recompute
  24. 2026-10-02 08:20 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  25. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  26. 2026-09-30 21:55 UTCEG score recompute
  27. 2026-09-30 21:55 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  28. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  29. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  30. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  31. 2026-09-28 09:14 UTCEG score recompute
  32. 2026-09-28 09:14 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  33. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  34. 2026-09-27 09:54 UTCEG score recompute
  35. 2026-09-27 09:54 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  36. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  37. 2026-09-25 03:41 UTCEG score recompute
  38. 2026-09-25 03:41 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  39. 2026-09-23 20:54 UTCEG score recompute
  40. 2026-09-23 20:54 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  41. 2026-09-22 21:19 UTCEG score recompute
  42. 2026-09-22 21:19 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  43. 2026-09-21 21:59 UTCEG score recompute
  44. 2026-09-21 21:58 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  45. 2026-09-20 22:38 UTCEG score recompute
  46. 2026-09-20 22:38 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  47. 2026-09-19 23:13 UTCEG score recompute
  48. 2026-09-19 23:13 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  49. 2026-09-18 23:53 UTCEG score recompute
  50. 2026-09-18 23:53 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  51. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  52. 2026-09-18 00:32 UTCEG score recompute
  53. 2026-09-18 00:32 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  54. 2026-09-17 00:33 UTCEG score recompute
  55. 2026-09-17 00:33 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  56. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  57. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  58. 2026-09-16 01:12 UTCEG score recompute
  59. 2026-09-16 01:12 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  60. 2026-09-15 01:31 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  61. 2026-09-14 02:10 UTCEG score recompute
  62. 2026-09-14 02:10 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  63. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  64. 2026-09-13 02:50 UTCEG score recompute
  65. 2026-09-13 02:50 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  66. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  67. 2026-09-12 03:29 UTCEG score recompute
  68. 2026-09-12 03:29 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  69. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  70. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  71. 2026-09-11 04:08 UTCEG score recompute
  72. 2026-09-11 04:08 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  73. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  74. 2026-09-10 04:46 UTCGHSA enrichmentGHSA-jcrf-7pr5-jv5v
  75. 2026-09-09 05:14 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-18673?
CVE-2026-18673 is a medium-severity vulnerability; its CVE record was published on August 12, 2026. When kuma-dp is configured with the Envoy admin API on a Unix domain socket, which is the default, its readiness service on TCP port 9902 - bound to all interfaces - forwards almost the entire Envoy admin API to any caller that can reach the port, with no authentication. An attacker with network…
When was the CVE record for CVE-2026-18673 published?
The CVE record for CVE-2026-18673 was published on August 12, 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 23, 2026; the record at its source may have been updated since.
Is CVE-2026-18673 actively exploited?
CVE-2026-18673 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18673?
CVE-2026-18673 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18673?
A fix for CVE-2026-18673 is available: update to the fixed version the vendor names in its advisory. Fixed versions, as the CVE record's CNA (Kong Inc.) states them: "Upgrade to Kong Mesh 2.14.2." The vendor advisories EchelonGraph has for CVE-2026-18673 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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