Security readout for executives and security teams
Plain-English summary
CVE-2026-31991 is a low-severity OpenClaw authorization bypass. In versions before 2026.2.26, a user approved through direct-message pairing could be incorrectly accepted by Signal group allowlist checks, potentially gaining group access they should not have.
Executive priority
Treat as routine but relevant if OpenClaw protects sensitive Signal group access. Prioritize patching during the next standard maintenance window, sooner for high-trust or regulated communications.
Technical view
OpenClaw’s Signal group allowlist logic incorrectly trusted sender identities from the DM pairing approval store. This CWE-863 authorization flaw can let a low-privileged attacker bypass group allowlist policy if DM pairing approval is obtained and user interaction occurs. CVSS is 3.7, with low confidentiality and integrity impact.
Likely exposure
Exposure appears limited to OpenClaw deployments running versions prior to 2026.2.26 that use Signal group allowlist controls and DM pairing approvals.
Exploitation context
The published CVSS indicates network access, high attack complexity, low privileges, and user interaction. The source bundle does not indicate CISA KEV listing or confirmed active exploitation.
Researcher notes
Evidence points to a boundary confusion between DM pairing approvals and Signal group allowlist authorization. Public sources provide advisory and patch references, but no evidence of exploitation in the source bundle.
Mitigation direction
- Upgrade OpenClaw to 2026.2.26 or later, per the advisory scope.
- Review the GitHub advisory and patch commits for vendor-specific remediation details.
- Temporarily review or restrict DM pairing approvals for sensitive Signal groups.
- Audit group allowlists for identities approved only through DM pairing.
Validation and detection
- Inventory OpenClaw instances and confirm versions are 2026.2.26 or later.
- Identify deployments using Signal group allowlist policies.
- Review recent DM pairing approvals against Signal group membership changes.
- Check logs for unexpected group access by DM-paired identities.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-863: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-31991 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N1.22.5VulnCheckCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
2LowVector: 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
Base CVSS 3.1 score
3.7LowVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- GitHub Security Advisory (GHSA-wm8r-w8pf-2v6w)CVE reference, VulnCheck · vendor-advisory
- Patch CommitCVE reference, VulnCheck · patch
- Patch CommitCVE reference, VulnCheck · patch
- VulnCheck Advisory: OpenClaw < 2026.2.26 - Authorization Bypass via DM Pairing-Store Leakage in Signal Group AllowlistCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.