VDB
CVE-2026-3114
CVE-2026-3114
PUBLISHED
CVSS 6.5 MEDIUM
Mattermost doesn't validate decompressed archive entry sizes during file extraction
EPSS 0.02% · 4.3th percentile
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.02%
4.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| github.com | mattermost/mattermost/server/v8 | 11.2.0, *, 10.11.0 |
| Mattermost | Mattermost | 11.5.0, 11.2.4, 10.11.12 |
| mattermost | mattermost_server | 10.11.0, 11.4.0, 11.3.0 |
Exploit Intelligence
- MMSA-2026-00598 (circl)
- CVE-2026-3114.json (github-poc)
- CVE-2026-3114.json (github-poc)
- CVE-2026-3114.json (github-poc)
- CVE-2026-3114.json (github-poc)
- CVE-2026-3114.json (github-poc)
- CVE-2026-3114.json (github-poc)
Timeline
- Mar 26, 2026 CVE Published
- Mar 27, 2026 Coalition ESS Score
- Mar 27, 2026 Security Advisory
- Mar 29, 2026 Security Advisory
- Mar 31, 2026 CVE Updated
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
References
- MMSA-2026-00598 vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-3114 advisory
- https://github.com/mattermost/mattermost package