CVE-2026-56774

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-06-25. a secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 0

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

Kanboard through 1.2.52, fixed in commit 928c68a, UserViewController::removeSession fails to validate the session id parameter before passing it to RememberMeSessionModel::remove, allowing authenticated users to delete other users' Remember Me sessions. Attackers can enumerate sequential session IDs and mass-invalidate persistent login sessions of any user, including administrators, forcing re-authentication and causing denial of service.

CVSS v3
5.4
EG Score
5.4(high)
EPSS
18.0%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 25, 2026

Advisory Details (4)

Auto-updated Jun 25, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
generic

Kanboard - Cross-User Deletion of Persistent Login Sessions via Unvalidated Session ID | Advisories | VulnCheck

https://www.vulncheck.com/advisories/kanboard-cross-user-deletion-of-persistent-login-sessions-via-unvalidated-session-id
github_pr

fix(user): scope remember me session removal to its owner

Fix merged in kanboard/kanboard PR #5831 on 2026-06-05 — awaiting tagged release

https://github.com/kanboard/kanboard/pull/5831
generic

[Security]: Cross-user deletion of persistent login sessions via removeSession IDOR · Issue #5829 · kanboard/kanboard · GitHub

https://github.com/kanboard/kanboard/issues/5829
github_commit

commit 928c68aa2b7c (kanboard/kanboard)

Fix landed in kanboard/kanboard commit 928c68aa2b7c — awaiting tagged release

https://github.com/kanboard/kanboard/commit/928c68aa2b7c00092dd71084d329b912e229f3d1

Vendor Advisories for CVE-2026-56774(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 24× in last 7d / 39× 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. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 14:46 UTCEG score recompute
  4. 2026-07-06 14:46 UTCGHSA enrichment
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 15:12 UTCEG score recompute
  8. 2026-07-05 15:12 UTCGHSA enrichment
  9. 2026-07-05 02:31 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 15:40 UTCEG score recompute
  12. 2026-07-04 15:39 UTCGHSA enrichment
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-03 16:07 UTCEG score recompute
  16. 2026-07-03 16:07 UTCGHSA enrichment
  17. 2026-07-02 16:36 UTCEG score recompute
  18. 2026-07-02 16:36 UTCGHSA enrichment
  19. 2026-07-01 17:01 UTCEG score recompute
  20. 2026-07-01 17:01 UTCGHSA enrichment
  21. 2026-07-01 15:07 UTCEPSS rescore
  22. 2026-06-30 23:22 UTCEPSS rescore
  23. 2026-06-30 17:29 UTCEG score recompute
  24. 2026-06-30 17:29 UTCGHSA enrichment
  25. 2026-06-29 17:57 UTCEG score recompute
Show 14 more
  1. 2026-06-29 17:57 UTCGHSA enrichment
  2. 2026-06-29 14:06 UTCEPSS rescore
  3. 2026-06-28 18:25 UTCEG score recompute
  4. 2026-06-28 18:25 UTCGHSA enrichment
  5. 2026-06-28 14:07 UTCEPSS rescore
  6. 2026-06-28 04:56 UTCEPSS rescore
  7. 2026-06-28 04:56 UTCEPSS rescore
  8. 2026-06-27 18:53 UTCEG score recompute
  9. 2026-06-27 18:53 UTCGHSA enrichment
  10. 2026-06-27 03:08 UTCEPSS rescore
  11. 2026-06-26 19:21 UTCEG score recompute
  12. 2026-06-26 19:21 UTCGHSA enrichment
  13. 2026-06-25 19:49 UTCEG score recompute
  14. 2026-06-25 19:49 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56774?
CVE-2026-56774 is a medium vulnerability published on June 25, 2026. Kanboard through 1.2.52, fixed in commit 928c68a, UserViewController::removeSession fails to validate the session id parameter before passing it to RememberMeSessionModel::remove, allowing authenticated users to delete other users' Remember Me sessions. Attackers can enumerate sequential session…
When was CVE-2026-56774 disclosed?
CVE-2026-56774 was first published in the National Vulnerability Database on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56774 actively exploited?
CVE-2026-56774 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56774?
CVE-2026-56774 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-56774?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56774, 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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