CVE-2026-84663

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-09-02. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.4Exploit: None knownExposed services: Not assessed

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

A cross-site request forgery (CSRF) vulnerability in Jenkins Pipeline: Groovy Libraries Plugin 798.v5cc688825312 and earlier allows attackers to delete shared library caches.

CVSS v3
5.4
EG Score
5.4MEDIUMhigh 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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

September 2, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Sep 2, 2026
No patch confirmed yet.
generic

Jenkins Security Advisory 2026-09-02

https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-3815

Vendor Advisories for CVE-2026-84663(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 19× in last 7d / 70× 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.

  1. 2026-09-29 14:19 UTCEG score recompute
  2. 2026-09-29 14:19 UTCGHSA enrichment
  3. 2026-09-28 13:52 UTCEPSS rescore
  4. 2026-09-28 13:41 UTCEG score recompute
  5. 2026-09-28 13:41 UTCGHSA enrichment
  6. 2026-09-27 13:48 UTCEPSS rescore
  7. 2026-09-27 13:05 UTCEG score recompute
  8. 2026-09-27 13:05 UTCGHSA enrichment
  9. 2026-09-26 15:59 UTCEPSS rescore
  10. 2026-09-26 12:28 UTCEG score recompute
  11. 2026-09-26 12:27 UTCGHSA enrichment
  12. 2026-09-25 08:53 UTCEG score recompute
  13. 2026-09-25 08:53 UTCGHSA enrichment
  14. 2026-09-24 14:04 UTCEPSS rescore
  15. 2026-09-24 08:17 UTCEG score recompute
  16. 2026-09-24 08:17 UTCGHSA enrichment
  17. 2026-09-23 17:54 UTCEPSS rescore
  18. 2026-09-23 07:41 UTCEG score recompute
  19. 2026-09-23 07:41 UTCGHSA enrichment
  20. 2026-09-22 16:01 UTCEPSS rescore
  21. 2026-09-22 07:05 UTCEG score recompute
  22. 2026-09-22 07:04 UTCGHSA enrichment
  23. 2026-09-21 21:09 UTCEPSS rescore
  24. 2026-09-21 06:28 UTCGHSA enrichment
  25. 2026-09-20 05:52 UTCGHSA enrichment
Show 45 more
  1. 2026-09-19 05:15 UTCEG score recompute
  2. 2026-09-19 05:15 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 04:39 UTCEG score recompute
  5. 2026-09-18 04:39 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 04:03 UTCEG score recompute
  8. 2026-09-17 04:03 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 03:26 UTCEG score recompute
  11. 2026-09-16 03:26 UTCGHSA enrichment
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-15 02:50 UTCGHSA enrichment
  15. 2026-09-14 02:14 UTCGHSA enrichment
  16. 2026-09-13 01:38 UTCGHSA enrichment
  17. 2026-09-12 01:02 UTCEG score recompute
  18. 2026-09-12 01:02 UTCGHSA enrichment
  19. 2026-09-11 14:53 UTCEPSS rescore
  20. 2026-09-11 14:53 UTCEPSS rescore
  21. 2026-09-11 00:25 UTCEG score recompute
  22. 2026-09-11 00:25 UTCGHSA enrichment
  23. 2026-09-09 23:48 UTCGHSA enrichment
  24. 2026-09-08 23:12 UTCEG score recompute
  25. 2026-09-08 23:12 UTCGHSA enrichment
  26. 2026-09-08 22:01 UTCEPSS rescore
  27. 2026-09-07 19:44 UTCEG score recompute
  28. 2026-09-07 19:44 UTCGHSA enrichment
  29. 2026-09-06 19:07 UTCEG score recompute
  30. 2026-09-06 19:07 UTCGHSA enrichment
  31. 2026-09-06 13:48 UTCEPSS rescore
  32. 2026-09-05 18:28 UTCEG score recompute
  33. 2026-09-05 18:28 UTCGHSA enrichment
  34. 2026-09-05 15:31 UTCEPSS rescore
  35. 2026-09-04 17:52 UTCEG score recompute
  36. 2026-09-04 17:52 UTCGHSA enrichment
  37. 2026-09-04 05:07 UTCEPSS rescore
  38. 2026-09-03 17:14 UTCGHSA enrichment
  39. 2026-09-02 18:37 UTCEG score recompute
  40. 2026-09-02 18:37 UTCGHSA enrichment
  41. 2026-09-02 17:23 UTCEG score recompute▲ 5.40
  42. 2026-09-02 17:21 UTCMITRE cvelistV5CVSS v3 → 5.4 · severity → MEDIUM
  43. 2026-09-02 16:30 UTCNVD update
  44. 2026-09-02 15:50 UTCEG score recompute
  45. 2026-09-02 15:46 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-84663?
CVE-2026-84663 is a medium vulnerability published on September 2, 2026. A cross-site request forgery (CSRF) vulnerability in Jenkins Pipeline: Groovy Libraries Plugin 798.v5cc688825312 and earlier allows attackers to delete shared library caches.
When was CVE-2026-84663 disclosed?
CVE-2026-84663 was first published on September 2, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84663 actively exploited?
CVE-2026-84663 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-84663?
CVE-2026-84663 has a CVSS v3.1 base score of 5.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-84663?
No fix for CVE-2026-84663 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-84663 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-84663

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