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  4. CVE 2026 28474 openclaw nextcloud talk 202626 allowlist bypass
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Back to active CVEs
Critical · CVSS 9.3CVE-2026-28474

OpenClaw Nextcloud Talk < 2026.2.6 - Allowlist Bypass via actor.name Display Name SpoofingCVE-2026-28474

Answer in brief

CVE-2026-28474 records a Critical severity (CVSS 9.3) vulnerability in OpenClaw Nextcloud Talk < 2026.2.6 - Allowlist Bypass via actor.name Display Name Spoofing. The current sources do not mark it as known exploited. The current feed maps OpenClaw/nextcloud-talk (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Mar 5, 2026Updated Sep 17, 2026Source checked Nov 2, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.3
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps OpenClaw/nextcloud-talk (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
OpenClaw/nextcloud-talkgeneric>=0 <2026.2.62026.2.6

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for OpenClaw/nextcloud-talk.
  2. 2Review the reported fix. Update OpenClaw/nextcloud-talk to 2026.2.6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Mar 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 17, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 17, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-863
Source
CVE List V5
Source checked
Nov 2, 2026
References
3 linked sources
Open source record