OpenClaw Nextcloud Talk < 2026.2.6 - Allowlist Bypass via actor.name Display Name Spoofing
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.
Summary
OpenClaw's Nextcloud Talk plugin versions prior to 2026.2.6 accept equality matching on the mutable actor.name display name field for allowlist validation, allowing attackers to bypass DM and room allowlists. An attacker can change their Nextcloud display name to match an allowlisted user ID and gain unauthorized access to restricted conversations.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenClaw | nextcloud-talk | before 2026.2.6 | 2026.2.6 | Patch available | CNA |
| — | @openclaw/nextcloud-talk (npm) | before 2026.2.6 | 2026.2.6 | Patch available | GHSA-r5h9-vjqc-hq3r |
- nextcloud-talk VendorOpenClaw Affected before 2026.2.6 Fixed in 2026.2.6 Patch available CNA
- @openclaw/nextcloud-talk (npm) Vendor— Affected before 2026.2.6 Fixed in 2026.2.6 Patch available GHSA-r5h9-vjqc-hq3r
Remediation
- Fix · CNA nextcloud-talk (OpenClaw) Fixed in 2026.2.6
- Fix · GHSA-r5h9-vjqc-hq3r @openclaw/nextcloud-talk (npm) Fixed in 2026.2.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-28474
- 2026-10-03 Alias added: GHSA-r5h9-vjqc-hq3r
- 2026-10-25 EPSS moved to the below the 50th percentile
References
More Openclaw vulnerabilities
- TI-2026-25309 OpenClaw < 2026.3.28 Media Parsing Path Traversal to Arbitrary File Read CVSS 4.0HIGH 8.7
- TI-2026-20394 Exposure of resource to wrong sphere in OpenClaw CVSS 3.1HIGH 8.8
- TI-2026-27742 OpenClaw < 2026.3.24 - Arbitrary Code Execution via .npmrc in Local Plugin/Hook Installation CVSS 4.0HIGH 8.4
- TI-2026-27766 OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook Pre-Auth Body Parsing CVSS 4.0MEDIUM 6.9
- TI-2026-07315 OpenClaw bluebubbles Webhook monitor.ts handleBlueBubblesWebhookRequest improper authentication CVSS 4.0MEDIUM 6.9
- TI-2026-17789 OpenClaw < 2026.2.22 - Allowlist Bypass via Command Substitution in system.run CVSS 4.0HIGH 7.5
Sources
- CVE-2026-28474 · CVE Program
- CVE-2026-28474 · NVD
- FIRST EPSS
- GHSA-r5h9-vjqc-hq3r · GitHub Advisory Database · CC BY 4.0
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