CVE-2026-66713

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-28. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Deserialization of Untrusted Data (CWE-502) in the Tribes-based clustering component

 in Apache Software Foundation Apache Axis2/Java through 2.0.0 on Apache Tomcat

 (only when Tribes clustering is enabled, which is off by default) allows an

 unauthenticated remote attacker with network access to the clustering port to

 execute arbitrary code via a crafted serialized Java object delivered to the cluster

 channel and deserialized in

 org.apache.axis2.clustering.tribes.Axis2ChannelListener#messageReceived. Users are

 recommended to upgrade to version 2.0.1, which fixes this issue by removing the

 clustering feature entirely.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
62%
KEV
Not listed

Published

July 28, 2026

Last Modified

August 5, 2026

Advisory Details (2)

Auto-updated Sep 9, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-66713: Apache Axis2/Java: deserialization of untrusted Data

http://www.openwall.com/lists/oss-security/2026/07/28/2
generic
https://lists.apache.org/thread/fgggbv3sjjqw7p6q0j88gspt9b2rb728

Vendor Advisories for CVE-2026-66713(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 34× in last 7d / 163× 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 326 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-66713?
CVE-2026-66713 is a critical vulnerability published on July 28, 2026. Deserialization of Untrusted Data (CWE-502) in the Tribes-based clustering component in Apache Software Foundation Apache Axis2/Java through 2.0.0 on Apache Tomcat (only when Tribes clustering is enabled, which is off by default) allows an unauthenticated remote attacker with network access to the…
When was CVE-2026-66713 disclosed?
CVE-2026-66713 was first published in the National Vulnerability Database on July 28, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66713 actively exploited?
CVE-2026-66713 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 38.1% of all scored CVEs.
What is the CVSS score of CVE-2026-66713?
CVE-2026-66713 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-66713?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66713, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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