CVE-2026-70426

CRITICALPre-NVD 9.09.0—
EchelonGraph scoreHIGH 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 — 3 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

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

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(high)
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
22%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 6, 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(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 60× in last 7d / 136× 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 136 total refreshes for this CVE.

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

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 6, 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 78.1% 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

Explore the affected products and dependency analysis for CVE-2026-70426

Explore →

Is Your Infrastructure Affected by CVE-2026-70426?

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

Start Free Scan →Browse All CVEs