Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with…
Exact source revision recorded 7 Nov 2026 01:27:56 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2025-205063
PublishedMattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to.
EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
Original publisher date fields
datePublished: Dec 24, 2025, 8:01:27 AM
dateUpdated: Dec 24, 2025, 4:36:22 PM
1 related source bulletins · separate from aliases
WID-SEC-W-2025-2712: Mattermost: Schwachstelle ermöglicht Offenlegung von Informationen
CVE-2025-13767
- Source published
- Dec 24, 2025, 8:01:27 AM (timezone not stated)
- Source modified
- Dec 24, 2025, 4:36:22 PM (timezone not stated)
- Observed here
- 7 Nov 2026 01:27:56 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.
EUVD CVSS 3.1 · 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N