A specifically drafted Playbook could trigger large amount of webhook requests leading to Denial of Service
Priority LOW 30CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-770.
Summary
Mattermost Playbooks plugin v1.24.0 and earlier fails to properly check the limit on the number of webhooks, which allows authenticated and authorized users to create a specifically drafted Playbook which could trigger a large amount of webhook requests leading to Denial of Service.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00735 54th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mattermost | Mattermost Playbooks | Playbooks – 1.24 | — | No fix listed | CNA |
- Mattermost Playbooks VendorMattermost Affected Playbooks – 1.24 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:playbooks:*:*:*:*:*:*:*:* | up to 1.24.0 | Vulnerable | Mattermost |
- cpe:2.3:a:mattermost:playbooks:*:*:*:*:*:*:*:* Versions up to 1.24.0 Vulnerable ·Mattermost
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-1333
- 2026-10-03 Alias added: GHSA-rr84-59x2-rrf4
References
Advisory 1
More Mattermost Playbooks vulnerabilities
- TI-2022-01420 Playbook members are allowed to escalate their membership privileges and perform actions restricted to playbook admins. CVSS 3.1HIGH 8.8
Sources
- CVE-2022-1333 · CVE Program
- CVE-2022-1333 · NVD
- FIRST EPSS
- GHSA-rr84-59x2-rrf4 · GitHub Advisory Database · CC BY 4.0
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