CVE-2026-31998

criticalpriority · track · 0OT risk · elevatedEPSS 0.003 · 26 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.33% (26th) EPSS
CVSS 9.8 · critical
Is it mine?
6 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-28

OpenClaw versions 2026.2.22 and 2026.2.23 contain an authorization bypass vulnerability in the synology-chat channel plugin where dmPolicy set to allowlist with empty allowedUserIds fails open. Attackers with Synology sender access can bypass authorization checks and trigger unauthorized agent dispatch and downstream tool actions.

01

cvss

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

9.8
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 4.9–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · NVD / NIST USexploitability 3.9 · impact 5.9
v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:Lsecondary · disclosure@vulncheck.comexploitability 3.9 · impact 4.7
v4.08.3highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.08.3highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:L/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
v4.04.9mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:L/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.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

04

affected products (6)

Products and version ranges known to be affected.

05

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-0501OpenClaw: Mehrere SchwachstellenDeutsch2026-02-24csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in OpenClaw ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, einen Denial-of-Service-Zustand zu verursachen, vertrauliche Informationen offenzulegen oder andere nicht näher definierte Angriffe durchzuführen.

  • GHSA-gw85-xp4q-5gp9OpenClaw's Synology Chat dmPolicy=allowlist failed open on empty allowedUserIds, allowing unauthorized agent dispatch2026-03-03ghsa · osvUS

    ### Summary In `openclaw` versions `2026.2.22` and `2026.2.23`, the optional `synology-chat` channel plugin had an authorization fail-open condition: when `dmPolicy` was `allowlist` and `allowedUserIds` was empty/unset, unauthorized senders were still allowed through to agent dispatch. This is assessed as **medium** severity because it requires channel/plugin setup and Synology sender access, but can still trigger downstream agent/tool actions. ### Affected Packages / Versions - Package: `openclaw` (npm) - Affected versions: `>= 2026.2.22, <= 2026.2.23` - Latest published affected version at patch time: `2026.2.23` - Planned patched version: `2026.2.24` ### Details Root cause was a policy mismatch across plugin code paths: 1. Default resolved DM policy was `allowlist`. 2. Empty `allowedUserIds` was treated as allow-all. 3. Webhook auth in allowlist mode depended on that helper. Result: `allowlist` with empty list behaved like open access for inbound Synology senders. ### Fix Commit(s) - `0ee30361b8f6ef3f110f3a7b001da6dd3df96bb5` - `7655c0cb3a47d0647cbbf5284e177f90b4b82ddb` ### Release Process Note `patched_versions` is pre-set to the planned next release (`>= 2026.2.24`). Once npm release `2026.2.24` is published, the advisory can be published directly. OpenClaw thanks @tdjackey for reporting. ### Publication Update (2026-02-25) `openclaw@2026.2.24` is published on npm and contains the fix commit(s) listed above. This advisory now marks `>= 2026.2.24` as patched.

06

also known as (4)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

08

references (13)

External citations — patches, advisories, analysis.

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