Vulnerability · Published Oct 30, 2026 · Assigned by GitHub_M

CVE-2026-63400Coop sessions are not invalidated on password reset

Low 2.3

In plain English

A low-severity security flaw in coop from roostorg. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).

Severity (CVSS 4.0)2.3Low

Exploit odds (30 days)0.3%top 80.9% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Coop is an open source review and moderation tool from ROOST. Prior to 1.0.2, `resetPasswordForToken` updates the password row without invalidating database-backed sessions. An attacker who has acquired a password and established a session retains access even after the legitimate user resets the password, leaving the compromised account under attacker control until the session expires at its `30-day` maximum age. This issue is fixed in version 1.0.2.

Affected products (as reported)

Vendor	Product	Versions
roostorg	coop	< 1.0.2

Weakness: CWE-613 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References

https://github.com/roostorg/coop/security/advisories/GHSA-g5xq-67g7-36r2 x_refsource_CONFIRM
https://github.com/roostorg/coop/pull/778 x_refsource_MISC
https://github.com/roostorg/coop/commit/f226db0fb7f03096d2a832304ad9614e944e4bf8 x_refsource_MISC
https://github.com/roostorg/coop/releases/tag/1.0.2 x_refsource_MISC