CVE-2026-70427

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-08-05. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

A fix is available — apply it.

Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not safely handle symbolic links with effectively empty names during the extraction of .tar and .tar.gz archives, allowing attackers able to control agent processes to provide crafted archives to the controller to write files to arbitrary locations on the file system, restricted only by file system access permissions of the user running Jenkins.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

August 5, 2026

Last Modified

September 8, 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-3930

Vendor Advisories for CVE-2026-70427(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-rhel8:17866286672026-08-26redhat
redhatocp-tools-4/jenkins-rhel8:17865335652026-08-26redhat
redhatocp-tools-4/jenkins-rhel9:17871251662026-08-26redhat
redhatocp-tools-4/jenkins-rhel9:17871246352026-08-26redhat
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-rhel8:17865335612026-08-26redhat
redhatocp-tools-4/jenkins-rhel9:17871246322026-08-26redhat
redhatocp-tools-4/jenkins-rhel9:17871247792026-08-26redhat
redhatocp-tools-4/jenkins-rhel8:17866286812026-08-26redhat

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 23× in last 7d / 96× 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 142 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-70427?
CVE-2026-70427 is a medium vulnerability published on August 5, 2026. Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not safely handle symbolic links with effectively empty names during the extraction of .tar and .tar.gz archives, allowing attackers able to control agent processes to provide crafted archives to the controller to write files to arbitrary…
When was CVE-2026-70427 disclosed?
CVE-2026-70427 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70427 actively exploited?
CVE-2026-70427 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 73.9% of all scored CVEs.
What is the CVSS score of CVE-2026-70427?
CVE-2026-70427 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-70427?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70427, 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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