CVE-2025-53114

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7% (50th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

CometD is a scalable comet implementation for web messaging. In versions 5.0.0 through 5.0.22, 6.0.0 through 6.0.18, 7.0.0 through 7.0.18, and 8.0.0 through 8.0.8, bad clients that always send a fixed batch value when the server is using the acknowledgement extension may cause the unacknowledged message queue to grow indefinitely, eventually causing an OutOfMemoryError. Versions 5.0.23, 6.0.19, 7.0.19, and 8.0.9 patch the issue. As a workaround, disable the acknowledgement extension.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
39
EG Risk 39/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
51st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 10, 2026

Last Modified

October 5, 2026

Advisory Details (6)

Auto-updated Jun 18, 2026
Patch available. Sources: github_pr, github.
githubMentions a patch (unverified)

Acknowledgement extension out of memory · Advisory · cometd/cometd · GitHub

https://github.com/cometd/cometd/security/advisories/GHSA-cqgj-h8vf-4w59
github_pr

Backported improvements from #2117.

Fix merged in cometd/cometd PR #2169 on 2025-08-19 — awaiting tagged release

https://github.com/cometd/cometd/pull/2169
github_pr

Backported improvements from #2117.

Fix merged in cometd/cometd PR #2168 on 2025-08-19 — awaiting tagged release

https://github.com/cometd/cometd/pull/2168
github_pr Patch Available

Fixes #2117 - Improve ack extension.

Patch available: cometd/cometd 8.0.9 (PR #2118 merged 2025-07-08)

https://github.com/cometd/cometd/pull/2118
generic

Improve ack extension · Issue #2117 · cometd/cometd · GitHub

https://github.com/cometd/cometd/issues/2117
generic

Heap memory usage of `org.cometd.server.ServerSessionImpl` objects · cometd cometd · Discussion #2116 · GitHub

https://github.com/cometd/cometd/discussions/2116

Vendor Advisories for CVE-2025-53114(1)

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

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.cometd.java:cometd-java-server-common8.0.0 ... 8.0.8 (9 versions)
  • 5.0.0 up to 5.0.23: fixed in 5.0.23
  • 6.0.0 up to 6.0.19: fixed in 6.0.19
  • 7.0.0 up to 7.0.19: fixed in 7.0.19
  • 8.0.0 up to 8.0.9: fixed in 8.0.9
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 153 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-53114?
CVE-2025-53114 is a high vulnerability published on June 10, 2026. CometD is a scalable comet implementation for web messaging. In versions 5.0.0 through 5.0.22, 6.0.0 through 6.0.18, 7.0.0 through 7.0.18, and 8.0.0 through 8.0.8, bad clients that always send a fixed batch value when the server is using the acknowledgement extension may cause the unacknowledged…
When was CVE-2025-53114 disclosed?
CVE-2025-53114 was first published on June 10, 2026, with the most recent update on October 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-53114 actively exploited?
CVE-2025-53114 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (51st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-53114?
CVE-2025-53114 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2025-53114?
A fix for CVE-2025-53114 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-53114 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-53114

Explore →

Is Your Infrastructure Affected by CVE-2025-53114?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs