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CVE-2026-91080

webhook through 2.8.3 Memory Exhaustion via Oversized Request Body

CVSS 4.0 8.7 HIGHCVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-91080

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-91080

Published

webhook

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "adnanh",
                    "product": "webhook",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:golang/github.com/adnanh/webhook",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "2.8.3",
                            "status": "affected",
                            "versionType": "custom"
                        }
                    ],
                    "repo": "https://github.com/adnanh/webhook"
                }

Original source record · Cite this exact observation · Complete original publisher JSON