CVE-2026-53861 json
OpenClaw < 2026.5.6 - Allowlist Bypass via Combined POSIX Inline Flags on macOS
published 5mo ago modified 4mo ago also EUVD-2026-37163 , GHSA-c226-q6fx-6j6c
- cvss
- 6.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
OpenClaw before 2026.5.6 contains an allowlist bypass vulnerability in the macOS Swift exec feature that misses combined POSIX inline-command flags. Attackers can execute shell content outside the intended allowlist check by using combined flag forms, potentially allowing unauthorized command execution depending on operator configuration.
Patch / fix
- npm openclaw 2026.5.6
- OpenClaw OpenClaw 2026.5.6
Is CVE-2026-53861 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 4mo ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.6 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 6.6 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/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 |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | openclaw | <2026.5.6 |
2026.5.6 |
Affected products
- OpenClaw OpenClaw
Classification
- Weakness
-
- CWE-184 Incomplete List of Disallowed Inputs
References
-
github.com
/openclaw/openclaw/security/advisories/GHSA-c226-q6fx-6j6c
vendor-advisory, web, mitigation, advisory
-
vulncheck.com
/advisories/openclaw-allowlist-bypass-via-combined-posix-inline-flags-on-macos
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-53861
advisory
-
github.com
/openclaw/openclaw
package
Sources
- CVE List CVE-2026-53861
- GitHub Advisory GHSA-c226-q6fx-6j6c
- NVD CVE-2026-53861
- Maintainer advisory GHSA-c226-q6fx-6j6c
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of openclaw/openclaw published their own advisory on GitHub. Reviewed sources take precedence over it.