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    2 vulnerabilities found for @fastify/session by @fastify/session

    CVE-2026-117499 (GCVE-0-2026-117499)

    Vulnerability from nvd – Published: 2026-10-27 11:19 – Updated: 2026-10-27 11:19
    VLAI
    Title
    @fastify/session vulnerable to session revocation bypass via a logout race condition
    Summary
    @fastify/session is a session plugin for Fastify. In all releases before 11.1.6, with the default rolling session behavior, a request that restored a session before a logout could save its own copy after another request had completed the session destroy call, recreating the destroyed session identifier with its authenticated data. An attacker who already holds a victim's valid signed session cookie and keeps a request in flight across the logout can replay that cookie to restore the session after it was meant to be revoked, without any cookie theft or signature forgery. The issue is fixed in @fastify/session 11.1.6, which adds a per session generation marker and a conditional store write so a session restored before a logout or regeneration cannot recreate or overwrite the current entry, and users should upgrade to 11.1.6 or later. There is no workaround, and custom session stores must implement the new conditional write.
    Severity
    3.7 (Low)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
    CWE
    • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
    • CWE-613 - Insufficient Session Expiration
    Assigner
    openjs CNA under the redhat root
    CNA scorecard C 65/100 over 118 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    @fastify/session @fastify/session Affected: 0 , < 11.1.6 (semver)
    Unaffected: 11.1.6 (semver)
    		Create a notification for this product.
    Credits
    koyokr BlueN0r mcollina UlisesGascon
    Show details on NVD website
    To clipboard 

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    CVE-2026-117499 (GCVE-0-2026-117499)

    Vulnerability from cvelistv5 – Published: 2026-10-27 11:19 – Updated: 2026-10-27 11:19
    VLAI
    Title
    @fastify/session vulnerable to session revocation bypass via a logout race condition
    Summary
    @fastify/session is a session plugin for Fastify. In all releases before 11.1.6, with the default rolling session behavior, a request that restored a session before a logout could save its own copy after another request had completed the session destroy call, recreating the destroyed session identifier with its authenticated data. An attacker who already holds a victim's valid signed session cookie and keeps a request in flight across the logout can replay that cookie to restore the session after it was meant to be revoked, without any cookie theft or signature forgery. The issue is fixed in @fastify/session 11.1.6, which adds a per session generation marker and a conditional store write so a session restored before a logout or regeneration cannot recreate or overwrite the current entry, and users should upgrade to 11.1.6 or later. There is no workaround, and custom session stores must implement the new conditional write.
    Severity
    3.7 (Low)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
    CWE
    • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
    • CWE-613 - Insufficient Session Expiration
    Assigner
    openjs CNA under the redhat root
    CNA scorecard C 65/100 over 118 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    @fastify/session @fastify/session Affected: 0 , < 11.1.6 (semver)
    Unaffected: 11.1.6 (semver)
    		Create a notification for this product.
    Credits
    koyokr BlueN0r mcollina UlisesGascon
    Show details on NVD website
    To clipboard 

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