CVE Explorer
CVE-2026-4858
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to check integration URL for path traversal which allows an malicious authenticated user to call an arbitrary API via system admin Mattermost auth token using via path traversal in integration action URL.. Mattermost Advisory ID: MMSA-2026-00640
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Mattermost","vendor":"Mattermost","versions":[{"lessThanOrEqual":"11.6.0","status":"affected","version":"11.6.0","versionType":"semver"},{"lessThanOrEqual":"11.5.3","status":"affected","version":"11.5.0","versionType":"semver"},{"lessThanOrEqual":"11.4.4","status":"affected","version":"11.4.0","versionType":"semver"},{"lessThanOrEqual":"10.11.14","status":"affected","version":"10.11.0","versionType":"semver"},{"status":"unaffected","version":"11.7.0"},{"status":"unaffected","version":"11.6.1"},{"status":"unaffected","version":"11.5.4"},{"status":"unaffe…
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:95396a6f0582233a2e1860e850b23ebe20ceca08bdca0ae1c064c3abbee215c2 · sha256:1c872339b30f39bc… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:95396a6f0582233a2e1860e850b23ebe20ceca08bdca0ae1c064c3abbee215c2 · sha256:1c872339b30f39bc… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:95396a6f0582233a2e1860e850b23ebe20ceca08bdca0ae1c064c3abbee215c2 · sha256:1c872339b30f39bc… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"MMSA-2026-00640","tags":["vendor-advisory"],"url":"https://mattermost.com/security-updates"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:95396a6f0582233a2e1860e850b23ebe20ceca08bdca0ae1c064c3abbee215c2 · sha256:1c872339b30f39bc… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.