CVE Explorer
CVE-2026-57574
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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"misskey","vendor":"misskey-dev","versions":[{"status":"affected","version":"< 2026.6.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:33ffd2f5fb03c2ecd1248955b25efeb1ee889f4871a9757116d6debffd63a51e · sha256:a7083fac190f81bc… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":7.4,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:33ffd2f5fb03c2ecd1248955b25efeb1ee889f4871a9757116d6debffd63a51e · sha256:a7083fac190f81bc… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-294","description":"CWE-294: Authentication Bypass by Capture-replay","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:33ffd2f5fb03c2ecd1248955b25efeb1ee889f4871a9757116d6debffd63a51e · sha256:a7083fac190f81bc… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/misskey-dev/misskey/commit/00c6210a591db2b0be438740d05b82070fa68ac6","tags":["x_refsource_MISC"],"url":"https://github.com/misskey-dev/misskey/commit/00c6210a591db2b0be438740d05b82070fa68ac6"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:33ffd2f5fb03c2ecd1248955b25efeb1ee889f4871a9757116d6debffd63a51e · sha256:a7083fac190f81bc… · /containers/cna/references/1
{"name":"https://github.com/misskey-dev/misskey/commit/d323fe00d04ac46ab0b4e66fce9169effaa8dfb7","tags":["x_refsource_MISC"],"url":"https://github.com/misskey-dev/misskey/commit/d323fe00d04ac46ab0b4e66fce9169effaa8dfb7"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:33ffd2f5fb03c2ecd1248955b25efeb1ee889f4871a9757116d6debffd63a51e · sha256:a7083fac190f81bc… · /containers/cna/references/2
{"name":"https://github.com/misskey-dev/misskey/releases/tag/2026.6.0","tags":["x_refsource_MISC"],"url":"https://github.com/misskey-dev/misskey/releases/tag/2026.6.0"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:33ffd2f5fb03c2ecd1248955b25efeb1ee889f4871a9757116d6debffd63a51e · sha256:a7083fac190f81bc… · /containers/cna/references/3
{"name":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-2m5x-5mp6-6vpq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-2m5x-5mp6-6vpq"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:33ffd2f5fb03c2ecd1248955b25efeb1ee889f4871a9757116d6debffd63a51e · sha256:a7083fac190f81bc… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.