CVE-2026-91080

47th percentile - higher than 47% of all known CVEs

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.

An attacker can crash the webhook service by exhausting memory, causing a denial of service. This may disrupt systems that depend on webhooks.

Update webhook to a version newer than 2.8.3 that limits the size of the request body read. Until then, consider enforcing a request size limit at the proxy level.