CVE-2026-70426

CRITICALPre-NVD 9.09.0—
EchelonGraph scoreMEDIUM confidence

Score 9.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-05. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
9.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.0Exploit: None knownExposed: 0

A fix is available — apply it.

In Remoting 3384.v60d89463d9e0 and earlier, except 3355.3357.v931d3c992987, included in Jenkins 2.575 and earlier, LTS 2.568.1 and earlier, the JEP-200 class filter is not applied to classes resolved via a fallback path in the Remoting deserialization implementation, allowing agent processes, code running on agents, and attackers with Agent/Connect permission to bypass the JEP-200 deserialization filter for classes on the Jenkins core classpath.

CVSS v3
9.0
EG Score
9.0(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity90% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 31, 2026

Advisory Details (1)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

Jenkins Security Advisory 2026-08-05

https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3911

Vendor Advisories for CVE-2026-70426(12)

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

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatocp-tools-4/jenkins-rhel8:17865335652026-08-26redhat
redhatocp-tools-4/jenkins-rhel9:17871250692026-08-26redhat
redhatocp-tools-4/jenkins-rhel9:17871249252026-08-26redhat
redhatocp-tools-4/jenkins-rhel9:17871253112026-08-26redhat
redhatocp-tools-4/jenkins-rhel8:17866286672026-08-26redhat
redhatocp-tools-4/jenkins-rhel9:17871246352026-08-26redhat
redhatocp-tools-4/jenkins-rhel9:17871251662026-08-26redhat
redhatocp-tools-4/jenkins-rhel9:17871247792026-08-26redhat
redhatocp-tools-4/jenkins-rhel8:17866286812026-08-26redhat
redhatocp-tools-4/jenkins-rhel8:17865335612026-08-26redhat
redhatocp-tools-4/jenkins-rhel9:17871246322026-08-26redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 76× in last 7d / 288× 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 415 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-70426?
CVE-2026-70426 is a critical vulnerability published on August 5, 2026. In Remoting 3384.v60d89463d9e0 and earlier, except 3355.3357.v931d3c992987, included in Jenkins 2.575 and earlier, LTS 2.568.1 and earlier, the JEP-200 class filter is not applied to classes resolved via a fallback path in the Remoting deserialization implementation, allowing agent processes, code…
When was CVE-2026-70426 disclosed?
CVE-2026-70426 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70426 actively exploited?
CVE-2026-70426 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 75.6% of all scored CVEs.
What is the CVSS score of CVE-2026-70426?
CVE-2026-70426 has a CVSS v3.1 base score of 9.0 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-70426?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70426, 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.

Dependency Blast Radius

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