Mattermost fails to scope the WebSocket response around notified users to a each user separately resulting in the WebSocket broadcasting the information about who was notified about a post to everyone else in the channel.
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This medium-severity CVE scores 4.3 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 31% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Mattermost fails to scope the WebSocket response around notified users to a each user separately resulting in the WebSocket broadcasting the information about who was notified about a post to everyone else in the channel.
January 2, 2024
November 21, 2024
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/mattermost/mattermost-server | — | 8.1.7+incompatible | — |
| github.com/mattermost/mattermost-server/v5 | — | — | — |
| github.com/mattermost/mattermost-server/v6 | — | — | — |
| github.com/mattermost/mattermost/server/v8 | — | — | — |
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-48732
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CWE-200