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Critical 9.8Published Feb 27, 2026

CVE-2026-28268Vikunja Vulnerable to Account Takeover via Password Reset Token Reuse

Updated under an hour ago ()

Does this affect you?

It affects go-vikunja vikunja and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Vikunja is an open-source self-hosted task management platform. Versions prior to 2.1.0 have a business logic vulnerability exists in the password reset mechanism of vikunja/api that allows password reset tokens to be reused indefinitely. Due to a failure to invalidate tokens upon use and a critical logic bug in the token cleanup cron job, reset tokens remain valid forever. This allows an attacker who intercepts a single reset token (via logs, browser history, or phishing) to perform a complete, persistent account takeover at any point in the future, bypassing standard authentication controls. Version 2.1.0 contains a patch for the issue.

CVSS
9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-459, CWE-640
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Analyzed
Record last updated
Mar 3, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
go-vikunja vikunja
go_vikunja:vikunja (from the name)
before 2.1.0
CNA record
vikunja vikunja
vikunja:vikunja
before 2.1.0
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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