Medium severity4.3NVD Advisory· Published Mar 16, 2026· Updated Jun 17, 2026
CVE-2026-2461
CVE-2026-2461
Description
Mattermost Plugins versions <=11.3 11.0.3 11.2.2 10.10.11.0 fail to implement authorisation checks on comment block modifications, which allows an authorised attacker with editor permission to modify comments created by other board members. Mattermost Advisory ID: MMSA-2025-00559
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/mattermost/mattermost-plugin-boardsGo | < 0.0.0-20260108044135-57c5be5b6ef5 | 0.0.0-20260108044135-57c5be5b6ef5 |
Affected products
5cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*range: <10.11.11
- (no CPE)range: 0
- ghsa-coords3 versionspkg:golang/github.com/mattermost/mattermost-plugin-boardspkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2016.0
< 0.0.0-20260108044135-57c5be5b6ef5+ 2 more
- (no CPE)range: < 0.0.0-20260108044135-57c5be5b6ef5
- (no CPE)range: < 0.0.20260326T203309-150000.1.155.2
- (no CPE)range: < 0.0.20260723T184607-160000.1.1
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-hf8w-x9h5-5gf9ghsaADVISORY
- mattermost.com/security-updatesnvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-2461ghsaADVISORY
- github.com/mattermost/mattermost-plugin-boards/commit/57c5be5b6ef59d02dd72e35094d1fae8ba6e9619ghsaWEB
News mentions
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