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VulnerabilityPublished

CVE-2026-44511: katalyst koi · Insufficient Session Expiration

Affects katalyst koiSource CVE Database V5

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Not known to be exploited · CVSS 7.4 High : upgrade to 4.20.0 soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
7.4High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.20.0
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade koi and katalyst/koi to 4.20.0.

Affected software

ProductAffectedFixed in
katalystkoiAffected
  • <4.20.0
  • >=5.0.0 <=5.6.0
Fixed in
  • 4.20.0
GitHubkatalyst/koipkg:github/katalyst/koiOther threatsAffected
  • <4.20.0
  • >=5.0.0 <=5.6.0
Fixed in
  • 4.20.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Katalyst Koi to version 4.20.0 or later, or 5.6.0 or later, where the session invalidation issue on logout is fixed. Since no official remediation level or patch links are provided, verify the upgrade path with the vendor or official releases. Until upgraded, consider rotating session secrets to invalidate existing session cookies. Patch status is not explicitly confirmed in the advisory; check vendor sources for current remediation guidance.

Description

Katalyst Koi is a framework for building Rails admin functionality. Prior to 4.20.0 and 5.6.0, admin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This vulnerability is fixed in 4.20.0 and 5.6.0.

References

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