{"cve":"CVE-2026-2461","nvd":{"published":"2026-03-16T14:19:29.753","modified":"2026-06-17T10:31:05.690","status":"Analyzed","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","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","score":4.3},"cwes":["CWE-639"],"references":["https://mattermost.com/security-updates"],"products":["mattermost:mattermost_server"],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-2461","score":0.00165,"percentile":0.05724,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hf8w-x9h5-5gf9","url":"https://osv.dev/vulnerability/GHSA-hf8w-x9h5-5gf9","summary":"Mattermost Boards Plugin fails to implement authorisation checks on comment block modifications","modified":"2026-03-23T18:55:57.843727Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-boards","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-boards","ranges":["<0.0.0-20260108044135-57c5be5b6ef5"],"fixed":["0.0.0-20260108044135-57c5be5b6ef5"]}]},{"id":"GO-2026-4782","url":"https://osv.dev/vulnerability/GO-2026-4782","summary":"Mattermost Boards Plugin fails to implement authorisation checks on comment block modifications in github.com/mattermost/mattermost-plugin-boards","modified":"2026-03-23T18:45:19.047130Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-boards","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-boards","ranges":["<0.0.0-20260108044135-57c5be5b6ef5"],"fixed":["0.0.0-20260108044135-57c5be5b6ef5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}