CVE-2026-64857

tirreno, a security framework, has a session fixation issue in versions prior to 0.10.0. During authentication, tirreno validates the user's credentials and establishes the authenticated session, but it does not call `session_regenerate_id()` afterward. As a result, the session identifier is not rotated on login, it stays the same before and after authentication. An attacker able to fix a known session identifier in a victim's browser (for example through a network man-in-the-middle position, or a separate cross-site scripting or subdomain cookie-injection issue) could then gain access to the victim's authenticated session. The issue is fixed in v0.10.0. The session identifier is now regenerated on successful authentication, and the previous session is destroyed. There is no configuration-level workaround.

CVSS

No CVSS.

References

Link	Resource
https://github.com/tirrenotechnologies/tirreno/releases/tag/v0.10.0
https://github.com/tirrenotechnologies/tirreno/security/advisories/GHSA-gwcm-4p9m-9mvr

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-09 14:17

Updated : 2026-09-09 20:20

NVD link : CVE-2026-64857

Mitre link : CVE-2026-64857

CVE.ORG link : CVE-2026-64857

JSON object : View

Products Affected

No product.

CWE

CWE-384

Session Fixation

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