CVE-2026-82464

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-08-29. a secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

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

pac4j-core before 6.5.6 contains an open redirect vulnerability in DefaultLogoutLogic.perform() that accepts backslash-prefixed logout redirect targets matching logoutUrlPattern. Attackers can craft logout links with backslash-prefixed external hosts that browsers normalize into network-path references, redirecting victims to attacker-controlled sites after logout.

CVSS v3
6.1
EG Score
6.1(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

August 29, 2026

Last Modified

September 10, 2026

Advisory Details (5)

Auto-updated Aug 29, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

pac4j-core before 6.5.6 Open Redirect via Backslash Logout | Advisories | VulnCheck

https://www.vulncheck.com/advisories/pac4j-core-before-6.5.6-open-redirect-via-backslash-logout
generic

GitHub - pac4j/pac4j: Security engine for Java (authentication, authorization, multi frameworks): OpenID Connect, SAML2, CAS, OAuth, LDAP, JWT... · GitHub

https://github.com/pac4j/pac4j
generic

pac4j/pac4j-core/src/main/java/org/pac4j/core/engine/DefaultLogoutLogic.java at pac4j-parent-6.5.5 · pac4j/pac4j · GitHub

https://github.com/pac4j/pac4j/blob/pac4j-parent-6.5.5/pac4j-core/src/main/java/org/pac4j/core/engine/DefaultLogoutLogic.java
generic

Security advisory for pac4j-core, pac4j-oidc and pac4j-saml | pac4j

https://www.pac4j.org/blog/security-advisory-pac4j-core-oidc-saml.html
github_commit

commit 2270c3ff70e9 (pac4j/pac4j)

Fix landed in pac4j/pac4j commit 2270c3ff70e9 — awaiting tagged release

https://github.com/pac4j/pac4j/commit/2270c3ff70e93cc43831e75702acd5135531237e

Vendor Advisories for CVE-2026-82464(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 20× in last 7d / 67× 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. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 02:03 UTCEG score recompute
  3. 2026-09-20 02:03 UTCGHSA enrichment
  4. 2026-09-19 03:51 UTCEG score recompute
  5. 2026-09-19 03:51 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 05:40 UTCEG score recompute
  8. 2026-09-18 05:40 UTCGHSA enrichment
  9. 2026-09-17 07:28 UTCEG score recompute
  10. 2026-09-17 07:28 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 09:16 UTCEG score recompute
  13. 2026-09-16 09:16 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 11:04 UTCEG score recompute
  16. 2026-09-15 11:04 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 12:47 UTCEG score recompute
  20. 2026-09-14 12:47 UTCGHSA enrichment
  21. 2026-09-13 14:36 UTCGHSA enrichment
  22. 2026-09-12 16:24 UTCEG score recompute
  23. 2026-09-12 16:24 UTCGHSA enrichment
  24. 2026-09-11 18:13 UTCEG score recompute
  25. 2026-09-11 18:13 UTCGHSA enrichment
Show 42 more
  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-10 20:01 UTCGHSA enrichment
  4. 2026-09-10 09:48 UTCEG score recompute
  5. 2026-09-10 09:48 UTCGHSA enrichment
  6. 2026-09-09 11:36 UTCEG score recompute
  7. 2026-09-09 11:36 UTCGHSA enrichment
  8. 2026-09-08 22:01 UTCEPSS rescore
  9. 2026-09-08 13:24 UTCEG score recompute
  10. 2026-09-08 13:23 UTCGHSA enrichment
  11. 2026-09-07 15:08 UTCGHSA enrichment
  12. 2026-09-06 16:56 UTCEG score recompute
  13. 2026-09-06 16:56 UTCGHSA enrichment
  14. 2026-09-06 13:48 UTCEPSS rescore
  15. 2026-09-05 18:44 UTCEG score recompute
  16. 2026-09-05 18:44 UTCGHSA enrichment
  17. 2026-09-05 15:31 UTCEPSS rescore
  18. 2026-09-04 20:32 UTCEG score recompute
  19. 2026-09-04 20:32 UTCGHSA enrichment
  20. 2026-09-04 05:07 UTCEPSS rescore
  21. 2026-09-03 22:10 UTCGHSA enrichment
  22. 2026-09-02 23:55 UTCEG score recompute
  23. 2026-09-02 23:55 UTCGHSA enrichment
  24. 2026-09-02 14:12 UTCEPSS rescore
  25. 2026-09-02 01:43 UTCEG score recompute
  26. 2026-09-02 01:42 UTCGHSA enrichment
  27. 2026-09-01 13:54 UTCEPSS rescore
  28. 2026-09-01 04:40 UTCEPSS rescore
  29. 2026-09-01 04:40 UTCEPSS rescore
  30. 2026-09-01 03:29 UTCEG score recompute
  31. 2026-09-01 03:28 UTCGHSA enrichment
  32. 2026-09-01 02:39 UTCEG score recompute
  33. 2026-09-01 02:39 UTCGHSA enrichment
  34. 2026-08-31 13:58 UTCEG score recompute
  35. 2026-08-31 13:58 UTCGHSA enrichment
  36. 2026-08-30 19:18 UTCEPSS rescore
  37. 2026-08-30 19:17 UTCEPSS rescore
  38. 2026-08-30 15:40 UTCEG score recompute
  39. 2026-08-30 15:40 UTCGHSA enrichment
  40. 2026-08-29 17:29 UTCEG score recompute
  41. 2026-08-29 16:41 UTCEG score recompute
  42. 2026-08-29 16:37 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82464?
CVE-2026-82464 is a medium vulnerability published on August 29, 2026. pac4j-core before 6.5.6 contains an open redirect vulnerability in DefaultLogoutLogic.perform() that accepts backslash-prefixed logout redirect targets matching logoutUrlPattern. Attackers can craft logout links with backslash-prefixed external hosts that browsers normalize into network-path…
When was CVE-2026-82464 disclosed?
CVE-2026-82464 was first published in the National Vulnerability Database on August 29, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82464 actively exploited?
CVE-2026-82464 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 89.9% of all scored CVEs.
What is the CVSS score of CVE-2026-82464?
CVE-2026-82464 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-82464?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82464, 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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