CVE-2021-25981

CRITICAL 9.8CVE-2021-25981 · Published 03/01/2022 · updated 17/06/2026

In short

CVE-2021-25981 is a CRITICAL (CVSS 9.8) vulnerability affecting talkyard (talkyard).
Chance of exploitation in the next 30 days (EPSS): 2.5%, higher than 85.1% of all vulnerabilities.
Fix: update to 0.2021.35 or later.

Package	Affected versions	Patched versions
talkyard talkyard	`≥ 0.2021.20, < 0.2021.35`	`0.2021.35`

Description

In Talkyard, regular versions v0.2021.20 through v0.2021.33 and dev versions v0.2021.20 through v0.2021.34, are vulnerable to Insufficient Session Expiration. This may allow an attacker to reuse the admin’s still-valid session token even when logged-out, to gain admin privileges, given the attacker is able to obtain that token (via other, hypothetical attacks)

References

debiki/talkyard commit b0310df · Patch
debiki/talkyard commit b071291 · Patch
whitesourcesoftware.com/vulnerability-database/CVE-2021-25981 · Patch

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