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Advisory details: github_osv / GHSA-x82f-27x3-q89c
Advisory ID github_osv/GHSA-x82f-27x3-q89c
Aliases
Summary OpenClaw's TOCTOU symlink race in writeFileWithinRoot could create or truncate files outside root boundaries ### Summary A symlink-retarget TOCTOU race in `writeFileWithinRoot` could point an attacker-controlled path alias outside the configured root between resolution and write operations. ### Impact Affected versions could cause out-of-root write side effects (including file creation or truncation) before final boundary validation. ### Fix Root-scoped write flow now opens existing files without pre-truncation, creates missing files with exclusive create semantics, truncates only after post-open identity/boundary checks, and removes out-of-root artifacts when a race is detected. ### Affected and Patched Versions - Affected: `<= 2026.2.26` - Patched: `2026.3.1`
Status Published
Exploitability 0.5
Weighted Severity 7.8
Risk 3.9
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (2)
CWE-59 Improper Link Resolution Before File Access ('Link Following')
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
System Score Found at
cvssv4 8.7 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-x82f-27x3-q89c/GHSA-x82f-27x3-q89c.json
generic_textual HIGH
Reference id Reference type URL
https://github.com/openclaw/openclaw
GHSA-x82f-27x3-q89c https://github.com/openclaw/openclaw/security/advisories/GHSA-x82f-27x3-q89c
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-x82f-27x3-q89c/GHSA-x82f-27x3-q89c.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.