CVE-2026-84652

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-09-02. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.3Exploit: None knownExposed: 0

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

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the "remember me" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known session cookie in the victim's browser, which after the victim authenticates via the "remember me" cookie, grants the attacker access to Jenkins as that user.

CVSS v3
7.3
EG Score
7.3(high)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity73% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 11, 2026

Advisory Details (1)

Auto-updated Sep 3, 2026
No patch confirmed yet.
generic

Jenkins Security Advisory 2026-09-02

https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4016

Vendor Advisories for CVE-2026-84652(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 27× in last 7d / 71× 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. 2026-09-19 10:45 UTCGHSA enrichment
  2. 2026-09-18 23:19 UTCEG score recompute
  3. 2026-09-18 23:19 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 11:59 UTCGHSA enrichment
  6. 2026-09-18 00:39 UTCEG score recompute
  7. 2026-09-18 00:39 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 13:19 UTCGHSA enrichment
  10. 2026-09-17 01:59 UTCGHSA enrichment
  11. 2026-09-16 14:39 UTCEG score recompute
  12. 2026-09-16 14:39 UTCGHSA enrichment
  13. 2026-09-16 14:09 UTCEPSS rescore
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-16 03:17 UTCGHSA enrichment
  16. 2026-09-15 15:57 UTCGHSA enrichment
  17. 2026-09-15 04:37 UTCEG score recompute
  18. 2026-09-15 04:36 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 17:16 UTCGHSA enrichment
  22. 2026-09-14 05:56 UTCGHSA enrichment
  23. 2026-09-13 18:36 UTCEG score recompute
  24. 2026-09-13 18:36 UTCGHSA enrichment
  25. 2026-09-13 07:16 UTCGHSA enrichment
Show 46 more
  1. 2026-09-12 19:56 UTCEG score recompute
  2. 2026-09-12 19:56 UTCGHSA enrichment
  3. 2026-09-12 08:36 UTCGHSA enrichment
  4. 2026-09-11 21:16 UTCEG score recompute
  5. 2026-09-11 21:16 UTCGHSA enrichment
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 10:11 UTCEG score recompute
  9. 2026-09-11 10:11 UTCGHSA enrichment
  10. 2026-09-10 22:47 UTCGHSA enrichment
  11. 2026-09-10 11:26 UTCEG score recompute
  12. 2026-09-10 11:26 UTCGHSA enrichment
  13. 2026-09-09 23:31 UTCGHSA enrichment
  14. 2026-09-09 10:33 UTCGHSA enrichment
  15. 2026-09-08 23:13 UTCEG score recompute
  16. 2026-09-08 23:13 UTCGHSA enrichment
  17. 2026-09-08 22:01 UTCEPSS rescore
  18. 2026-09-08 10:59 UTCGHSA enrichment
  19. 2026-09-07 23:35 UTCEG score recompute
  20. 2026-09-07 23:35 UTCGHSA enrichment
  21. 2026-09-07 12:15 UTCGHSA enrichment
  22. 2026-09-07 00:51 UTCEG score recompute
  23. 2026-09-07 00:51 UTCGHSA enrichment
  24. 2026-09-06 13:48 UTCEPSS rescore
  25. 2026-09-06 13:27 UTCGHSA enrichment
  26. 2026-09-06 02:07 UTCEG score recompute
  27. 2026-09-06 02:07 UTCGHSA enrichment
  28. 2026-09-05 15:31 UTCEPSS rescore
  29. 2026-09-05 14:44 UTCGHSA enrichment
  30. 2026-09-05 03:20 UTCGHSA enrichment
  31. 2026-09-04 16:00 UTCEG score recompute
  32. 2026-09-04 16:00 UTCGHSA enrichment
  33. 2026-09-04 05:07 UTCEPSS rescore
  34. 2026-09-04 04:39 UTCEG score recompute
  35. 2026-09-04 04:39 UTCGHSA enrichment
  36. 2026-09-03 17:14 UTCGHSA enrichment
  37. 2026-09-03 16:33 UTCGHSA enrichment
  38. 2026-09-03 15:35 UTCEG score recompute▲ 7.30
  39. 2026-09-03 15:35 UTCGHSA enrichment
  40. 2026-09-03 15:34 UTCMITRE cvelistV5CVSS v3 → 7.3 · severity → HIGH
  41. 2026-09-02 18:37 UTCGHSA enrichment
  42. 2026-09-02 18:34 UTCNVD update
  43. 2026-09-02 17:31 UTCMITRE cvelistV5
  44. 2026-09-02 16:30 UTCNVD update
  45. 2026-09-02 15:51 UTCEG score recompute
  46. 2026-09-02 15:46 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-84652?
CVE-2026-84652 is a high vulnerability published on September 2, 2026. In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the "remember me" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known session cookie in the victim's browser, which after the victim…
When was CVE-2026-84652 disclosed?
CVE-2026-84652 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84652 actively exploited?
CVE-2026-84652 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 60.1% of all scored CVEs.
What is the CVSS score of CVE-2026-84652?
CVE-2026-84652 has a CVSS v3.1 base score of 7.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-84652?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84652, 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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