CVE-2026-41299

HIGH
MEDIUM Priority: 0.01 BB Relevance: 64/100
Published: 2026-04-21 Modified: 2026-11-11 First seen: 2026-11-11 Status: active

Attack Surface

Network Low Complexity No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: X
AT: None
VC: Low
VI: High
VA: None

Description

OpenClaw before 2026.3.28 contains an authorization bypass vulnerability in the chat.send gateway method where ACP-only provenance fields are gated by self-declared client metadata from WebSocket handshake rather than verified authorization state. Authenticated operator clients can spoof ACP identity labels and inject reserved provenance fields intended only for the ACP bridge by manipulating client metadata during connection.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
openclaw openclaw < 2026.3.28

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

7.1 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/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

EPSS — Exploitation Probability

0.20%
Raw Score 0.002030
Percentile 10.3%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00203
2026-11-12
0.00203
2026-11-10
0.00203

Intelligence Sources

nvd ref →