CVE-2021-25981 - CVE House
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Status published Critical CVE-2021-25981

Talkyard - Insufficient Session Expiration

Vulnerability 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)

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • WhiteSource Vulnerability Research Team (WVR)

References

More from debiki

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CVE-2021-25980
Talkyard - Host-Header Injection Leads to Account Takeover
High 8.8

Affected Vendor

Affected Software

talkyard
Vulnerable Versions:
v0.2021.20, unspecified

Timeline

Official Publish: January 3rd, 2022
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-613

MITRE ATT&CK TTPs

T1539 Steal Web Session Cookie
Credential Access
T1078 Valid Accounts
Persistence
T1550 Use Alternate Authentication Material
Defense Evasion
T1021 Remote Services
Lateral Movement
T1562 Impair Defenses
Defense Evasion