CVE Explorer
CVE-2026-1046
Mattermost Desktop App versions <=6.0 6.2.0 5.2.13.0 fail to validate help links which allows a malicious Mattermost server to execute arbitrary executables on a user’s system via the user clicking on certain items in the Help menu Mattermost Advisory ID: MMSA-2026-00577
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":"6.2.0","status":"affected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.2.13","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"6.1.0"},{"status":"unaffected","version":"6.0.3.0"},{"status":"unaffected","version":"5.13.3.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:d45065217833c9bc6639894f5f10bb7d058a805b127e08f87dac2995e9a7eb56 · sha256:dcaf5e85c64e33ee… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.6,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:d45065217833c9bc6639894f5f10bb7d058a805b127e08f87dac2995e9a7eb56 · sha256:dcaf5e85c64e33ee… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-939","description":"CWE-939: Improper Authorization in Handler for Custom URL Scheme","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:d45065217833c9bc6639894f5f10bb7d058a805b127e08f87dac2995e9a7eb56 · sha256:dcaf5e85c64e33ee… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"MMSA-2026-00577","tags":["vendor-advisory"],"url":"https://mattermost.com/security-updates"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d45065217833c9bc6639894f5f10bb7d058a805b127e08f87dac2995e9a7eb56 · sha256:dcaf5e85c64e33ee… · /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.