CVE-2026-7521 (GCVE-0-2026-7521)

Vulnerability from cvelistv5 – Published: 2026-07-28 13:58 – Updated: 2026-07-28 14:48
VLAI
Title
SAML certificate deletion allows path traversal to delete arbitrary files outside the config directory
Summary
Mattermost versions 11.8.x <= 11.8.0, 11.7.x <= 11.7.3, 11.6.x <= 11.6.5, 10.11.x <= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666
Severity
5.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
URL Tags
https://mattermost.com/security-updates vendor-advisory
Impacted products
Vendor Product Version
Mattermost Mattermost Affected: 11.8.0 , ≤ 11.8.0 (semver)
Affected: 11.7.0 , ≤ 11.7.3 (semver)
Affected: 11.6.0 , ≤ 11.6.5 (semver)
Affected: 10.11.0 , ≤ 10.11.20 (semver)
Unaffected: 11.9.0
Unaffected: 11.8.1
Unaffected: 11.7.4
Unaffected: 11.6.6
Unaffected: 10.11.21
Create a notification for this product.
Credits
winfunc
Show details on NVD website
To clipboard 

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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

Author Source Type Date Other

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.


Detection rules are retrieved from Rulezet.