CVE-2026-3691

mediumpriority · track · 0EPSS 0.005 · 40 %ileDEEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.46% (40th) EPSS
CVSS 5.3 · medium
Is it mine?
4 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

OpenClaw Client PKCE Verifier Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose stored credentials on affected installations of OpenClaw. User interaction is required to exploit this vulnerability in that the target must initiate an OAuth authorization flow. The specific flaw exists within the implementation of OAuth authorization. The issue results from the exposure of sensitive data in the authorization URL query string. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-29381.

01

cvss

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

5.3
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.05.3mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:Nsecondary · ENISA EU
v3.05.3mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:Nsecondary · zdi-disclosures@trendmicro.comexploitability 1.6 · impact 3.6
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200USCWE-200US
03

affected products (4)

Products and version ranges known to be affected.

04

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-0542OpenClaw: Mehrere SchwachstellenDeutsch2026-02-25csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in OpenClaw ausnutzen, um Dateien zu manipulieren, um Informationen offenzulegen, und um Sicherheitsvorkehrungen zu umgehen.

  • GHSA-6g25-pc82-vfwpOpenClaw: macOS beta onboarding exposed PKCE verifier via OAuth state2026-03-03ghsa · osvUS

    ### Summary The affected surface is the OpenClaw macOS app onboarding flow, and the macOS app is currently in **beta**. In that beta onboarding flow, Anthropic OAuth used the PKCE `code_verifier` value as OAuth `state`, exposing that secret in front-channel URL state. ### Affected Packages / Versions - Package: `openclaw` (npm) - Affected versions: `<= 2026.2.24` (latest published npm at triage time) - Affected surface: macOS app beta onboarding path (`apps/macos`) - Not affected: core CLI/gateway onboarding paths - Patched version : `2026.2.25` ### Impact Scope is limited to the macOS beta onboarding OAuth path. Exploitation required obtaining both OAuth authorization artifacts and exposed `state` values during that flow. ### Remediation OpenClaw removed Anthropic OAuth sign-in from macOS onboarding and now supports setup-token-only Anthropic subscription auth in this path. ### Fix Commit(s) - `8f3310000a8b0c11eced054c2cdb6fb27803511a` ### Release Process Note `patched_versions` is pre-set to the release (`2026.2.25`). Advisory published with npm release `2026.2.25`.2.25` is published, this advisory is published. OpenClaw thanks @zdi-disclosures for reporting.

05

also known as (3)

Other names and identifiers for this entity.

06

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcert_bundnvdosvNVDCVE.orgMITRE
published 2026-04-11modified 2026-06-17
07

references (7)

External citations — patches, advisories, analysis.

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