CVE-2026-57574 (GCVE-0-2026-57574)

Vulnerability from cvelistv5 – Published: 2026-07-10 20:55 – Updated: 2026-07-10 20:55
VLAI
Title
Misskey: TOTP tokens can be reused
Summary
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.
Severity
7.4 (High)
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
CWE
  • CWE-294 - Authentication Bypass by Capture-replay
Assigner
References
Impacted products
Vendor Product Version
misskey-dev misskey Affected: < 2026.6.0
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        }
      ],
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
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        },
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        }
      ],
      "source": {
        "advisory": "GHSA-2m5x-5mp6-6vpq",
        "discovery": "UNKNOWN"
      },
      "title": "Misskey: TOTP tokens can be reused"
    }
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  "cveMetadata": {
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    "cveId": "CVE-2026-57574",
    "datePublished": "2026-07-10T20:55:49.896Z",
    "dateReserved": "2026-06-24T18:49:56.208Z",
    "dateUpdated": "2026-07-10T20:55:49.896Z",
    "state": "PUBLISHED"
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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