CVE-2026-26246
4.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Summary
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to bound memory allocation when processing PSD image files which allows an authenticated attacker to cause server memory exhaustion and denial of service via uploading a specially crafted PSD file. Mattermost Advisory ID: MMSA-2026-00572
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mattermost | Mattermost | 11.3.0 <= 11.3.0 | affected |
| Mattermost | Mattermost | 11.2.0 <= 11.2.2 | affected |
| Mattermost | Mattermost | 10.11.0 <= 10.11.10 | affected |
| Mattermost | Mattermost | 11.4.0 | unaffected |
| Mattermost | Mattermost | 11.3.1 | unaffected |
| Mattermost | Mattermost | 11.2.3 | unaffected |
| Mattermost | Mattermost | 10.11.11 | unaffected |
Weaknesses
- CWE-789: CWE-789: Memory Allocation with Excessive Size Value
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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