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Description

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.

PUBLISHED Reserved 2026-02-19 | Published 2026-03-18 | Updated 2026-03-25 | Assigner VulnCheck




LOW: 2.3CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Product status

Default status
unaffected

Any version before 2026.2.21
affected

Credits

tdjackey reporter

References

github.com/...enclaw/security/advisories/GHSA-62f6-mrcj-v8h5 (GitHub Security Advisory (GHSA-62f6-mrcj-v8h5)) third-party-advisory

github.com/...ommit/fbb79d4013000552d6a2c23b9613d8b3cb92f6b6 (Patch Commit) patch

www.vulncheck.com/...otype-pollution-via-debug-override-path (VulnCheck Advisory: OpenClaw < 2026.2.21 - Prototype Pollution via Debug Override Path) third-party-advisory

cve.org (CVE-2026-27524)

nvd.nist.gov (CVE-2026-27524)

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