CVE-2021-25980

Talkyard - Host-Header Injection Leads to Account Takeover

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.

Remediation

Solution:

  • Update to tyse-v0.2021.29-8cb7f73fe-regular or later

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.20% Top 20%
Third-Party Advisory github.com Third-Party Advisory whitesourcesoftware.com
Affected: debiki talkyard
Published at:
Updated at:

References

Link Tags
https://github.com/debiki/talkyard/commit/4067e191a909ed06f250d09a40e43aa5edbb0289 third party advisory patch
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25980 third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-25980?
CVE-2021-25980 has been scored as a high severity vulnerability.
How to fix CVE-2021-25980?
To fix CVE-2021-25980: Update to tyse-v0.2021.29-8cb7f73fe-regular or later
Is CVE-2021-25980 being actively exploited in the wild?
It is possible that CVE-2021-25980 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-25980?
CVE-2021-25980 affects debiki talkyard.
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