CVE-2026-57574
Misskey: TOTP tokens can be reused
CVSS Score
0.0
EPSS Score
0.3%
EPSS Percentile
26th
Misskey is an open source, federated social media platform. Prior to 2026.6.0, Misskey contains a vulnerability in Time-based One-Time Password (TOTP) authentication in UserAuthService where insufficient validation of used tokens allows the reuse of a single-use code within its valid time step. If both credentials and a TOTP code are obtained concurrently, an attacker may reuse the code to perform unauthorized actions, potentially leading to account takeover. This issue is fixed in version 2026.6.0.
| CWE | CWE-294 |
| Vendor | misskey-dev |
| Product | misskey |
| Published | Jul 10, 2026 |
| Last Updated | Jul 13, 2026 |
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Affected Versions
misskey-dev / misskey
< 2026.6.0
References
github.com: https://github.com/misskey-dev/misskey/security/advisories/GHSA-2m5x-5mp6-6vpq github.com: https://github.com/misskey-dev/misskey/commit/00c6210a591db2b0be438740d05b82070fa68ac6 github.com: https://github.com/misskey-dev/misskey/commit/d323fe00d04ac46ab0b4e66fce9169effaa8dfb7 github.com: https://github.com/misskey-dev/misskey/releases/tag/2026.6.0