LiveActive security incident?Get immediate response
CVE Record

CVE-2026-32921: OpenClaw < 2026.3.8 - Script Content Modification via Mutable Operand Binding in system.run

OpenClaw before 2026.3.8 contains an approval bypass vulnerability in system.run where mutable script operands are not bound across approval and execution phases. Attackers can obtain approval for script execution, modify the approved script file before execution, and execute different content while maintaining the same approved command shape.

MediumCVSS 6.3Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

OpenClaw versions before 2026.3.8 have a flaw in how it approves and runs scripts. An authenticated attacker can get a script approved, swap its contents on disk before it runs, and then execute different code under the original approval. This undermines the trust boundary between review and execution.

Executive priority

Plan a scheduled upgrade within the next patch cycle. Business risk is moderate, not urgent: exploitation requires an authenticated user with script submission rights, and no active abuse is cited. Prioritize sooner if OpenClaw runs in production automation with untrusted internal users or sensitive downstream actions.

Technical view

A time-of-check to time-of-use (CWE-367) race exists in system.run. Script operands are not bound between the approval phase and the execution phase, so the approved file path can be modified after approval but before execution. The engine executes the modified content while treating it as the previously approved command, bypassing review controls.

Likely exposure

Exposure is limited to environments running OpenClaw before 2026.3.8 that expose system.run to lower-privileged users through an approval workflow. CVSS 6.3 (AV:N/AC:L/PR:L/UI:N) indicates a network-reachable, low-complexity flaw requiring low privileges. Not listed in CISA KEV. No public exploitation is cited in the source bundle.

Exploitation context

Not listed in KEV and no active exploitation is cited in the provided sources. The vector requires an attacker with low privileges who can submit scripts for approval and then modify the on-disk content between approval and execution. Impact is partial across confidentiality, integrity, and availability per CVSS 3.1.

Researcher notes

CWE-367 TOCTOU where the operand (script path/content) is not bound between check and use in system.run. Investigate whether approval hashes, immutable snapshots, or file descriptor pinning are introduced by the patch commits (c76d292, cf3a479). Confirm whether approval logs record content hashes so post-hoc detection of pre-patch abuse is feasible. Evidence is limited to vendor advisory and VulnCheck writeup.

Mitigation direction

  • Upgrade OpenClaw to version 2026.3.8 or later on all instances.
  • Apply the vendor patch commits referenced in GHSA-8g75-q649-6pv6.
  • Restrict who can submit or approve scripts to trusted operators only.
  • Monitor script directories for modifications between approval and execution.
  • Review vendor advisory for any interim configuration guidance if upgrade is delayed.

Validation and detection

  • Inventory OpenClaw deployments and record installed versions.
  • Confirm patched hosts report 2026.3.8 or later after upgrade.
  • Verify the two patch commits are present in the running build's history.
  • Audit system.run approval and execution logs for mismatched script contents.
  • Retest an approval-to-execution workflow to confirm operand binding is enforced.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · low confidence lookup

CWE-367: 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 lookup
cve · low confidence lookup

CVE-2026-32921 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.3 (3.1)
Known Exploited
No
Published

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

Official CVE source material

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.

2CVSS vectors
3Timeline events
1ADP providers
5Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

2 official scores

We 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.

ScoreVersionSeverityVectorExploitImpactSource
6.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L2.83.4VulnCheck
5.3CVSS 4.0MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N——VulnCheck

Vulnerability scoring details

Base CVSS 4.0 score

5.3Medium
CVSS 4.0 vector shape for CVE-2026-32921Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
OpenClawOpenClaw0, 2026.3.8unaffected
Weakness

CWE details

CWE-367

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-367 · source CWE mapping

Time-of-check Time-of-use (TOCTOU) Race Condition

Time-of-check Time-of-use (TOCTOU) Race Condition represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs