CVE-2026-5132
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Unbounded zlib decompression in Calls SDP WebSocket messages
Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7, 10.11.x <= 10.11.22 fail to limit size of unpacked SDP messages compressed with zlib, which allows attacker to deny service or crash server via sending many SDP messages that unpack to large size.. Mattermost Advisory ID: MMSA-2026-00643
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Mattermost
- Vendor
- Mattermost
- Product
- Mattermost
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 11.9.0 | affected | semver | Unavailable | 11.9.0 | None listed |
| 11.8.0 | affected | semver | Unavailable | 11.8.4 | None listed |
| 11.7.0 | affected | semver | Unavailable | 11.7.7 | None listed |
| 10.11.0 | affected | semver | Unavailable | 10.11.22 | None listed |
| 11.10.0 | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 11.9.1 | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 11.8.5 | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 11.7.8 | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 10.11.23 | unaffected | Unavailable | Unavailable | Unavailable | None listed |