CVE Explorer
CVE-2026-9602
Mattermost Desktop App versions <=6.2 6.0.2 5.6.13.0 fail to validate payloads sent from the Mattermost Web App to the Desktop App which allows a malicious server owner to crash the Mattermost Desktop App via changing the payload of a method to a malformed one. Mattermost Advisory ID: MMSA-2026-00678
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":"6.0.2","status":"affected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.6.13","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"6.3.0"},{"status":"unaffected","version":"6.2.1.0"},{"status":"unaffected","version":"5.13.7.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:78c8726ef2524c5b7d291f9ae36e04195407644eaabcb0439861ce550eabea31 · sha256:abb8f1e143e116e9… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":5.7,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:78c8726ef2524c5b7d291f9ae36e04195407644eaabcb0439861ce550eabea31 · sha256:abb8f1e143e116e9… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:78c8726ef2524c5b7d291f9ae36e04195407644eaabcb0439861ce550eabea31 · sha256:abb8f1e143e116e9… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"MMSA-2026-00678","tags":["vendor-advisory"],"url":"https://mattermost.com/security-updates"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:78c8726ef2524c5b7d291f9ae36e04195407644eaabcb0439861ce550eabea31 · sha256:abb8f1e143e116e9… · /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.