https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-28T20:49:10.774546+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-27524 CVE-2026-27524 — OpenClaw < 2026.2.21 - Prototype Pollution via Debug Override Path 2026-09-28T20:49:10.777027+00:00

Affected: OpenClaw

OpenClaw versions prior to 2026.2.21 accept prototype-reserved keys in runtime /debug set override object values, allowing prototype pollution attacks. Authorized /debug set callers can inject __proto__, constructor, or prototype keys to manipulate object prototypes and bypass command gate restrictions.

 https://vulnerability.circl.lu/vuln/ghsa-62f6-mrcj-v8h5 GHSA-62f6-mrcj-v8h5 — OpenClaw's runtime /debug override path accepted prototype-reserved keys 2026-09-28T20:49:10.777121+00:00

Affected: npm: openclaw

### Summary OpenClaw accepted prototype-reserved keys in runtime `/debug set` override object values (`__proto__`, `constructor`, `prototype`).

### Impact `/debug` is disabled by default, and exploitation requires an already authorized `/debug set` caller. No unauthenticated vector was identified.

This issue affects runtime in-memory overrides only (non-persistent and cleared on restart/reset). Given the required prior authorization boundary, this is treated as defense-in-depth hardening for command flag evaluation.

### Affected Packages / Versions - Package: `openclaw` (npm) - Latest published vulnerable version confirmed: `2026.2.19-2` - Vulnerable range: `<= 2026.2.19-2` - Patched in planned next release: `2026.2.21`

### Technical Details - Runtime override merges now block reserved prototype keys during deep merge. - Runtime override writes now sanitize nested object values to remove reserved prototype keys before storing overrides. - Restricted command gates (`bash`, `config`, `debug`) now require own-property boolean flags, preventing inherited prototype values from enabling commands.

### Fix Commit(s) - `fbb79d4013000552d6a2c23b9613d8b3cb92f6b6`

### Release Process Note `patched_versions` is pre-set to `2026.2.21` so after the npm release is live, this advisory can be published immediately.

OpenClaw thanks @tdjackey for reporting.