CVE-2026-67351 (GCVE-0-2026-67351)

Vulnerability from cvelistv5 – Published: 2026-07-30 13:57 – Updated: 2026-07-30 13:57 X_Open Source
VLAI
Title
Serendipity < 2.6.1 Authentication Bypass via Username Collision
Summary
Serendipity before 2.6.1 contains an authentication context confusion vulnerability where password validation and session loading operate independently without ensuring both use the same user record. An authenticated Editor can create a username collision with an Administrator account and obtain administrative privileges by logging in with their own password while the session loads the Administrator's account data.
CWE
  • CWE-304 - Missing Critical Step in Authentication
Assigner
References
Impacted products
Vendor Product Version
s9y Serendipity Affected: 0 , < 2.6.1 (semver)
Unaffected: 2.6.1 (semver)
Create a notification for this product.
Date Public
2026-07-27 00:00
Credits
Vaibhav Kubade (@DevVaibhav07)
Show details on NVD website

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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.
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  • 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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