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CVE-2026-28474

Openclaw broken access control

9.8 CRITICALEPSS 0.88%
  1. Published5 Mar 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Openclaw< 2026.2.6

Remediation

Fixed in
Openclaw≥ 2026.2.6

References

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Frequently asked

Is CVE-2026-28474 being actively exploited?

CVE-2026-28474 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.88%.

How severe is CVE-2026-28474?

CVE-2026-28474 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.88% probability of exploitation.

Which products are affected by CVE-2026-28474?

Affected products include Openclaw.

How do I fix CVE-2026-28474?

Upgrade affected software to a fixed version, for example Openclaw 2026.2.6 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-28474 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.