Staging Environment: Content and features may be unstable or change without notice.
Advisory details: gitlab / npm/openclaw/CVE-2026-4040
Advisory ID gitlab/npm/openclaw/CVE-2026-4040
Aliases CVE-2026-4040
GHSA-6c9j-x93c-rw6j
Summary OpenClaw safeBins file-existence oracle information disclosure An information disclosure vulnerability in OpenClaw's `tools.exec.safeBins` approval flow allowed a file-existence oracle. When safe-bin validation examined candidate file paths, command allow/deny behavior could differ based on whether a path already existed on the host filesystem. An attacker could probe for file presence by comparing outcomes for existing vs non-existing filenames.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (3)
CWE-203 Observable Discrepancy
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv2 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/openclaw/CVE-2026-4040.yml
cvssv3.1 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/openclaw/CVE-2026-4040.yml
Reference id Reference type URL
https://github.com/openclaw/openclaw
https://github.com/openclaw/openclaw/commit/bafdbb6f112409a65decd3d4e7350fbd637c7754
CVE-2026-4040 https://nvd.nist.gov/vuln/detail/CVE-2026-4040
GHSA-6c9j-x93c-rw6j https://github.com/advisories/GHSA-6c9j-x93c-rw6j
GHSA-6c9j-x93c-rw6j https://github.com/openclaw/openclaw/security/advisories/GHSA-6c9j-x93c-rw6j
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: AV:L/AC:L/Au:S/C:P/I:N/A:N Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/openclaw/CVE-2026-4040.yml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/openclaw/CVE-2026-4040.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-12T13:08:04Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/4xxx/CVE-2026-4040.json

Source Advisory: vulnrichment/CVE-2026-4040

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'no'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]