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CVE-2026-28478

OpenClaw < 2026.2.13 - Denial of Service via Unbounded Webhook Request Body Buffering

Published: Mar 5, 2026Updated: Mar 5, 2026 Sources: CVE List NVD GHSA BDUCWE-770
7.5HIGH
NVD MITRE
EPSS Score
0.4%
Top 64.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

OpenClaw versions prior to 2026.2.13 contain a denial of service vulnerability in webhook handlers that buffer request bodies without strict byte or time limits. Remote unauthenticated attackers can send oversized JSON payloads or slow uploads to webhook endpoints causing memory pressure and availability degradation.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-770

Affected Products

npm
package-ecosystem
openclawLibrary
OSS Libraries / npm
clawdbot
OSS Libraries
OpenClaw
oss-projectaka crabbox, clawdbot
OpenClawLibrary
OSS Libraries / npm
Сообщество свободного программного обеспечения
oss-projectaka fsf
OpenClawOn-prem
Operating Systems

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/openclaw/openclaw/commit/3cbcba10cf30c2ffb898f0d8c7dfb929f15f8930
github.com
https://github.com/openclaw/openclaw/security/advisories/GHSA-q447-rj3r-2cgh
github.com
https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-webhook-request-body-buffering
vulncheck.com
and 3 more references View all →

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