EUVD-2026-77715
GHSA-4wr8-3xfv-vhj5
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from Vendor (VulnCheck) · only source for this CVE.
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Memory exhaustion in adnanh/webhook through 2.8.3 allows unauthenticated remote attackers to crash the service by streaming multi-gigabyte HTTP request bodies at any configured hook endpoint. The daemon reads the entire request body into memory before it evaluates trigger rules or validates the payload signature, so invalid or unsigned requests are just as effective as valid ones at forcing an out-of-memory kill. …
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Same technique Denial Of Service
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External POC / Exploit Code
Leaving vuln.today