CVE-2021-25980 - CVE House
Back to Database
Status published High CVE-2021-25980

Talkyard - Host-Header Injection Leads to Account Takeover

Vulnerability Description

In Talkyard, versions v0.04.01 through v0.6.74-WIP-63220cb, v0.2020.22-WIP-b2e97fe0e through v0.2021.02-WIP-879ef3fe1 and tyse-v0.2021.02-879ef3fe1-regular through tyse-v0.2021.28-af66b6905-regular, are vulnerable to Host Header Injection. By luring a victim application-user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

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

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-25980

Credits & Attribution

No credits recorded in the NVD database.

References

More from debiki

View All →
CVE-2021-25981
Talkyard - Insufficient Session Expiration
Critical 9.8

Affected Vendor

Affected Software

talkyard
Vulnerable Versions:
v0.04.01, v0.2020.22-WIP-b2e97fe0e, v0.2021, tyse-v0.2021.02-879ef3fe1-regular

Timeline

Official Publish: November 11th, 2021
Last Modified: April 30th, 2025
Added to House: July 21st, 2026

CVSS Vectors

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

Weaknesses (CWE)

CWE-74

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1059 Command and Scripting Interpreter
Execution
T1562 Impair Defenses
Defense Evasion
T1213 Data from Information Repositories
Collection