Which versions of OpenClaw are affected by EUVD-2026-26105?

OpenClaw file synchronization versions before 2026.3.31 contain a sandbox escape vulnerability allowing authenticated users with low privileges to read and write arbitrary files on the system through…. A patch is available.

How to fix or mitigate EUVD-2026-26105?

Within 24 hours: Identify all OpenClaw deployments and document current versions in use. Within 7 days: Upgrade OpenClaw to version 2026.3.31 or later; apply commits c02ee8a and 3b9dab0 if building from source. Verify deployment by testing mirror operations against known-safe directory structures. Within 30 days: Audit OpenClaw sync logs for suspicious symlink patterns or out-of-bounds file access attempts; review and restrict sync account privileges to minimum necessary permissions; implement file integrity monitoring on directories accessed by OpenClaw.

OpenClaw EUVD-2026-26105

Q: What is the CVSS score of EUVD-2026-26105?

EUVD-2026-26105 has a CVSS 4.0 base score of 7.6 (High). CVSS vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/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:X. EPSS exploitation probability: 0.1%.

| CVE-2026-41397 HIGH

Improper Link Resolution Before File Access (CWE-59)

2026-04-28 VulnCheck

GHSA-cwf8-44x6-32c2

Authentication Bypass Openclaw

7.6

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

7.6 HIGH

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/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:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/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:X

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Re-analysis Queued

Apr 28, 2026 - 20:23 vuln.today

cvss_changed

Analysis Generated

Apr 28, 2026 - 20:05 vuln.today

Severity Changed

Apr 28, 2026 - 19:52 NVD

MEDIUM HIGH

CVSS changed

Apr 28, 2026 - 19:52 NVD

6.8 (MEDIUM) 7.6 (HIGH)

EUVD ID Assigned

Apr 28, 2026 - 19:30 euvd

EUVD-2026-26105

Analysis Generated

Apr 28, 2026 - 19:30 vuln.today

Patch released

Apr 28, 2026 - 19:30 nvd

Patch available

CVE Published

Apr 28, 2026 - 18:09 nvd

HIGH 7.6

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

1 npm packages depend on openclaw (1 direct, 0 indirect)

Ecosystem-wide dependent count for version 2026.3.31.

DescriptionCVE.org

OpenClaw before 2026.3.31 contains a sandbox escape vulnerability allowing attackers to traverse directory boundaries through symlink exploitation during file synchronization operations. Remote attackers can bypass sandbox restrictions by crafting malicious symlinks in mirror sync operations to access arbitrary files outside intended boundaries.

AnalysisAI

Sandbox escape in OpenClaw file synchronization before version 2026.3.31 enables remote authenticated attackers to read and write arbitrary files outside intended boundaries via crafted symlinks during mirror sync operations. The vulnerability exploits CWE-59 (Improper Link Resolution Before File Access) with attack complexity rated High and requires low privileges, indicating targeted exploitation scenarios. Vendor patches available via GitHub commits c02ee8a and 3b9dab0, with CVSS 7.6 reflecting high confidentiality and integrity impact but no availability impact. No active exploitation or public POC identified at time of analysis beyond vendor disclosure.

Technical ContextAI

This vulnerability affects the file synchronization component of OpenClaw (CPE: cpe:2.3:a:openclaw:openclaw), classified as CWE-59 (Improper Link Resolution Before File Access / Link Following). The flaw occurs when OpenClaw's sandbox environment fails to properly validate symbolic links during mirror synchronization operations. When processing sync requests, the application follows symlinks without verifying whether the target path escapes the intended sandbox directory boundaries. This is a classic TOCTOU (Time-of-Check-Time-of-Use) issue where symlink resolution happens after path validation, allowing an attacker to substitute a legitimate path with a symlink pointing to restricted filesystem locations. The CVSS 4.0 vector indicates network-based attack delivery (AV:N), high complexity (AC:H) suggesting specific timing or configuration requirements, and present attack techniques (AT:P) meaning specialized knowledge is needed. The vulnerability impacts confidentiality and integrity (VC:H/VI:H) while leaving availability unaffected (VA:N), with no scope change (SC:N/SI:N/SA:N), indicating the attack remains within the vulnerable component's privileges.

RemediationAI

Upgrade to OpenClaw version 2026.3.31 or later, which contains fixes implemented in GitHub commits c02ee8a3a4cb390b23afdf21317aa8b2096854d1 and 3b9dab0ece4643a9643e6a45459f5c709d3ce320. Review the vendor advisory at https://github.com/openclaw/openclaw/security/advisories/GHSA-cwf8-44x6-32c2 for version-specific guidance. If immediate patching is not feasible, implement compensating controls: disable remote access to mirror sync functionality entirely by blocking sync API endpoints at the network perimeter (eliminates AV:N vector but breaks legitimate sync use cases); restrict sync feature access to only essential administrative accounts via RBAC policies (raises PR:L to PR:H, reducing attacker pool); deploy filesystem-level symlink restrictions using mount options like 'nosymfollow' on sync target directories (breaks legitimate symlink use within sync operations); enable audit logging for all sync operations with real-time alerting on sync requests containing symlink paths (detection-focused, does not prevent exploitation but enables incident response). Each mitigation trades functionality for security-coordinate with application owners before implementing.