CVE-2026-28471

mediumpriority · track · 0EPSS 0.002 · 16 %ileDEEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.24% (16th) EPSS
CVSS 5.3 · medium
Is it mine?
5 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

OpenClaw version 2026.1.14-1 prior to 2026.2.2, with the Matrix plugin installed and enabled, contain a vulnerability in which DM allowlist matching could be bypassed by exact-matching against sender display names and localparts without homeserver validation. Remote Matrix users can impersonate allowed identities by using attacker-controlled display names or matching localparts from different homeservers to reach the routing and agent pipeline.

01

cvss

Technical severity, 0–10. One row per scoring source.

6.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.7–6.5

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · disclosure@vulncheck.comexploitability 3.9 · impact 1.4
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Nsecondary · OSV
v4.06.3mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.06.3mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/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:Xsecondary · disclosure@vulncheck.com
v4.01.7lowCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/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:Xsecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

04

affected products (5)

Products and version ranges known to be affected.

05

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-0424OpenClaw: Mehrere SchwachstellenDeutsch2026-02-15csaf · cert_bundDE

    Ein Angreifer kann diese Schwachstellen in OpenClaw ausnutzen, um beliebigen Programmcode auszuführen, sich erhöhte Berechtigungen zu verschaffen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, einen Denial-of-Service-Zustand herbeizuführen, vertrauliche Informationen offenzulegen oder andere, nicht näher bezeichnete Angriffe durchzuführen.

  • GHSA-rmxw-jxxx-4cpcOpenClaw has a Matrix allowlist bypass via displayName and cross-homeserver localpart matching2026-02-17ghsa · osvUS

    ### Summary OpenClaw Matrix DM allowlist matching could be bypassed in certain configurations. Matrix support ships as an optional plugin (not bundled with the core install), so this only affects deployments that have installed and enabled the Matrix plugin. ### Affected Packages / Versions - Package: `openclaw` (npm) - Affected: `>= 2026.1.14-1, < 2026.2.2` - Patched: `>= 2026.2.2` ### Details In affected versions, DM allowlist decisions could be made by exact-matching `channels.matrix.dm.allowFrom` entries against multiple sender-derived candidates, including: - The sender display name (attacker-controlled and non-unique) - The sender MXID localpart with the homeserver discarded, so `@alice:evil.example` and `@alice:trusted.example` both match `alice` If an operator configured `channels.matrix.dm.allowFrom` with display names or bare localparts (for example, `"Alice"` or `"alice"`), a remote Matrix user may be able to impersonate an allowed identity for allowlist purposes and reach the routing/agent pipeline. ### Impact Matrix DM allowlist identity confusion. The practical impact depends on your Matrix channel policies and what capabilities are enabled downstream. ### Mitigation - Upgrade to `openclaw >= 2026.2.2`. - Ensure Matrix allowlists contain only full Matrix user IDs (MXIDs) like `@user:server` (or `*`). Do not use display names or bare localparts. ### Fix Commit(s) - `8f3bfbd1c4fb967a2ddb5b4b9a05784920814bcf` ### Release Process Note The patched version is already published to npm; the advisory can be published once you're ready. Thanks @MegaManSec (https://joshua.hu) of [AISLE Research Team](https://aisle.com/) for reporting.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

published 2026-03-05modified 2026-06-17
08

references (10)

External citations — patches, advisories, analysis.

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