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: 0.4%CVSS: 4.3Exploit: None knownExposed services: Not assessed

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
4.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA 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
Severity43% × 45%
Exploitation0% × 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
0.4%
EPSS %ILE
35th
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

August 5, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Aug 5, 2026
Patch available.
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 / EcosystemFix (by version range) / 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 18× in last 7d / 87× 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 183 total refreshes for this CVE.

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

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 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 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-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?
A fix for CVE-2026-70427 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-70427 are linked in the Vendor Advisories panel on this page.

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