Vulnerability Report

CVE-2026-31991

Title: Authorization Bypass in Signal group allowlist policy

Other

Proof Of Concept

No public PoC currently indexed for CVE-2026-31991.

CWE Category CWE-863

Published Date Mar 19, 2026

Modified Date Mar 19, 2026

Exploit Status Not Found

Score 2.0 CVSS v4.0

Exploit Probability (EPSS)

0.15%

Vulnerability Summary

CVE-2026-31991: OpenClaw versions prior to 2026.2.26 contain an authorization bypass vulnerability where Signal group allowlist policy incorrectly accepts sender identities from DM pairing-store approvals. Attackers can exploit this boundary weakness by obtaining DM pairing approval to bypass group allowlist checks and gain unauthorized group access.

Impacted Vendors

openclaw 1

Reference Links

https://github.com/openclaw/openclaw/commit/64de4b6d6ae81e269ceb4ca16f53cda99ced967a https://github.com/openclaw/openclaw/commit/8bdda7a651c21e98faccdbbd73081e79cffe8be0 https://github.com/openclaw/openclaw/security/advisories/GHSA-wm8r-w8pf-2v6w https://www.vulncheck.com/advisories/openclaw-authorization-bypass-via-dm-pairing-store-leakage-in-signal-group-allowlist

CVSS v4.0

Source Entity [email protected]

Severity LOW

2.0

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

ACTIVE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

N/A

RAW VECTOR

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:A/VC:L/VI:L/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

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

4.6

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

CVSS v3.1

Source Entity [email protected]

Severity LOW

3.7

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-31991 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

March 19, 2026 MODIFIED

Vulnerability data updated via NVD.

March 19, 2026 MODIFIED

Vulnerability data updated via NVD.

March 19, 2026 MODIFIED

Vulnerability data updated via NVD.

March 19, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity HIGH

Privileges N/A

Interaction ACTIVE

CVSS Vector String


                                    CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:A/VC:L/VI:L/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

Affected Stack

No specific products linked.