CVE-2026-91080
webhook through 2.8.3 reads the entire request body into memory before evaluating trigger rules, allowing unauthenticated attackers to exhaust memory by sending oversized bodies. Attackers can send multi-gigabyte request bodies with invalid signatures to trigger out-of-memory conditions and crash the service.
- Published Sep 14, 2026
- CVSS 8.7 high
- 0.7% chance of exploitation in the next 30 days (EPSS)