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x/vulndb: potential Go vuln in github.com/mattermost/mattermost/server/v8: GHSA-9p92-x77w-9fw2 #3959

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x/vulndb: potential Go vuln in github.com/mattermost/mattermost/server/v8: GHSA-9p92-x77w-9fw2#3959
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Description

@GoVulnBot
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opened on Sep 16, 2025

Advisory GHSA-9p92-x77w-9fw2 references a vulnerability in the following Go modules:

Module
github.com/mattermost/mattermost-server
github.com/mattermost/mattermost-server/v5
github.com/mattermost/mattermost-server/v6
github.com/mattermost/mattermost/server/v8

Description:
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to properly validate cache keys for link metadata which allows authenticated users to access unauthorized posts and poison link previews via hash collision attacks on FNV-1 hashing.

References:

Cross references:

See doc/quickstart.md for instructions on how to triage this report.

id: GO-ID-PENDING
modules:
    - module: github.com/mattermost/mattermost-server
      versions:
        - introduced: 9.11.0+incompatible
        - fixed: 9.11.18+incompatible
        - introduced: 10.5.0+incompatible
        - fixed: 10.5.9+incompatible
        - introduced: 10.8.0+incompatible
        - fixed: 10.8.4+incompatible
        - introduced: 10.9.0+incompatible
        - fixed: 10.9.4+incompatible
        - introduced: 10.10.0+incompatible
        - fixed: 10.10.2+incompatible
      vulnerable_at: 10.10.2-rc4+incompatible
    - module: github.com/mattermost/mattermost-server/v5
      vulnerable_at: 5.39.3
    - module: github.com/mattermost/mattermost-server/v6
      vulnerable_at: 6.7.2
    - module: github.com/mattermost/mattermost/server/v8
      non_go_versions:
        - fixed: 8.0.0-20250718075842-cd87e5c87737
      vulnerable_at: 8.0.0-20250916125831-ce791e571a1e
summary: Mattermost makes Use of Weak Hash in github.com/mattermost/mattermost-server
cves:
    - CVE-2025-9078
ghsas:
    - GHSA-9p92-x77w-9fw2
references:
    - advisory: https://github.com/advisories/GHSA-9p92-x77w-9fw2
    - advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-9078
    - fix: https://github.com/mattermost/mattermost/commit/356880c8430b77a4a390c89d5a33f6928188d137
    - fix: https://github.com/mattermost/mattermost/commit/944ad5cdd9876ef61c78c8275906262a4118755a
    - fix: https://github.com/mattermost/mattermost/commit/a8a4badc130be101e5bc4b7916bbcd2f966c4b79
    - fix: https://github.com/mattermost/mattermost/commit/cd87e5c877373f109742aa90a3fa136c14774325
    - web: https://mattermost.com/security-updates
source:
    id: GHSA-9p92-x77w-9fw2
    created: 2025-09-16T20:05:59.216275502Z
review_status: UNREVIEWED

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