Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/adnanh/webhook
- https://github.com/adnanh/webhook/blob/2.8.3/webhook.go
- https://github.com/adnanh/webhook/issues/756
- https://www.vulncheck.com/advisories/webhook-through-2.8.3-memory-exhaustion-via
- https://github.com/adnanh/webhook/issues/756
FAQ
What is CVE-2026-91080?
CVE-2026-91080 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 mu...
How severe is CVE-2026-91080?
CVE-2026-91080 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-91080?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.