Denial of Service via HTTP/2 single packet attack on login endpoint
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 10.11.12+incompatible, 11.2.4+incompatible, 11.3.2+incompatible, 11.4.1+incompatible, 11.4.1, and 3 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to rate limit login requests which allows unauthenticated remote attackers to cause denial of service (server crash and restart) via HTTP/2 single packet attack with 100+ parallel login requests.. Mattermost Advisory ID: MMSA-2025-00566
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Mattermost Mattermost
From 11.4.0 · through 11.4.0; From 11.3.0 · through 11.3.1; From 11.2.0 · through 11.2.3; From 10.11.0 · through 10.11.11
- github.com/mattermost/mattermost-serverGo
From 10.11.0-rc1+incompatible · fixed in 10.11.12+incompatible; From 11.2.0-rc1+incompatible · fixed in 11.2.4+incompatible; From 11.3.0-rc1+incompatible · fixed in 11.3.2+incompatible; From 11.4.0-rc1+incompatible · fixed in 11.4.1+incompatible
- github.com/mattermost/mattermost-serverGo
From 11.4.0-rc1 · fixed in 11.4.1
- github.com/mattermost/mattermost-serverGo
From 11.3.0-rc1 · fixed in 11.3.2
- github.com/mattermost/mattermost-serverGo
From 11.2.0-rc1 · fixed in 11.2.4
- github.com/mattermost/mattermost-serverGo
From 10.11.0-rc1 · fixed in 10.11.12