Security readout for executives and security teams
Plain-English summary
OpenClaw before 2026.2.21 can let an authorized debug user corrupt shared object behavior through unsafe override keys. The reported impact is limited integrity loss, not data theft or outage. Business urgency depends on whether debug access exists in deployed environments.
Executive priority
Treat as a near-term remediation item for environments with debug access enabled. It is not currently evidenced as actively exploited, but it can weaken command controls if an authorized account is abused.
Technical view
The flaw is CWE-1321 prototype pollution in the runtime /debug set override path. Inputs containing __proto__, constructor, or prototype were accepted, allowing prototype manipulation and potential bypass of command gate restrictions. CVSS is 4.3 because exploitation requires low privileges and affects integrity only.
Likely exposure
Likely exposed systems are OpenClaw deployments earlier than 2026.2.21 where authorized users or services can call the /debug set path. The source bundle’s affected-version metadata is inconsistent, so validate against vendor guidance.
Exploitation context
The bundle does not indicate known active exploitation, and KEV is false. Exploitation requires authorized access to the debug override function, reducing internet-scale risk but leaving insider, compromised-account, or misconfigured-debug exposure.
Researcher notes
Focus validation on the debug override object handling and reserved-key filtering. Do not assume broader unauthenticated exposure from the bundle. The affected section lists version 0/default unaffected, which conflicts with the advisory title.
Mitigation direction
- Upgrade OpenClaw to 2026.2.21 or later where available.
- Review the vendor advisory and patch commit before deployment.
- Restrict /debug access to trusted administrative contexts only.
- Disable debug override functionality in production if not required.
- Monitor vendor guidance for any updated affected-version clarification.
Validation and detection
- Inventory OpenClaw deployments and identify versions below 2026.2.21.
- Confirm whether /debug set is enabled in production environments.
- Review access controls for authorized debug callers.
- Check logs for override keys named __proto__, constructor, or prototype.
- Verify the patch rejects prototype-reserved keys in debug overrides.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-1321: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-27524 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N2.81.4VulnCheckCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
2.3LowVector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- GitHub Security Advisory (GHSA-62f6-mrcj-v8h5)CVE reference, VulnCheck · vendor-advisory
- Patch CommitCVE reference, VulnCheck · patch
- VulnCheck Advisory: OpenClaw < 2026.2.21 - Prototype Pollution via Debug Override PathCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.