CVE-2026-3590
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)
Race Condition in Guest Magic Link Authentication Allows Token Reuse
Mattermost versions 10.11.x <= 10.11.12, 11.5.x <= 11.5.0, 11.4.x <= 11.4.2, 11.3.x <= 11.3.2 fail to enforce atomic single-use consumption of guest magic link tokens, which allows an attacker with access to a valid magic link to establish multiple independent authenticated sessions via concurrent requests.. Mattermost Advisory ID: MMSA-2026-00624
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) |
|---|---|---|---|---|---|
| 10.11.0 | affected | semver | Unavailable | 10.11.12 | None listed |
| 11.5.0 | affected | semver | Unavailable | 11.5.0 | None listed |
| 11.4.0 | affected | semver | Unavailable | 11.4.2 | None listed |
| 11.3.0 | affected | semver | Unavailable | 11.3.2 | None listed |
| 11.6.0 | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 10.11.13 | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 11.5.1 | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 11.4.3 | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 11.3.3 | unaffected | Unavailable | Unavailable | Unavailable | None listed |