OpenClaw up to 2026.2.20 /debug prototype pollution

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenClaw up to 2026.2.20 and classified as problematic. Impacted is an unknown function of the file /debug. Such manipulation leads to prototype pollution. This vulnerability is listed as CVE-2026-27524. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in OpenClaw up to 2026.2.20. Affected by this issue is an unknown code of the file /debug. The manipulation with an unknown input leads to a prototype pollution vulnerability. Using CWE to declare the problem leads to CWE-1321. The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. Impacted is integrity. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-27524 since 02/19/2026. The exploitation is known to be difficult. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.

Upgrading to version 2026.2.21 eliminates this vulnerability. Applying the patch fbb79d4013000552d6a2c23b9613d8b3cb92f6b6 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-0472). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Open Source OpenClaw

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.9
VulDB Meta Temp Score: 3.9

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔒

CNA Base Score: 4.3
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Prototype pollution
CWE: CWE-1321 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenClaw 2026.2.21
Patch: fbb79d4013000552d6a2c23b9613d8b3cb92f6b6

Timelineinfo

02/19/2026 CVE reserved
03/18/2026 +27 days Advisory disclosed
03/18/2026 +0 days VulDB entry created
03/26/2026 +8 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-62f6-mrcj-v8h5
Status: Confirmed

CVE: CVE-2026-27524 (🔒)
GCVE (CVE): GCVE-0-2026-27524
GCVE (VulDB): GCVE-100-351488
CERT Bund: WID-SEC-2026-0472 - OpenClaw: Mehrere Schwachstellen

Entryinfo

Created: 03/18/2026 07:22
Updated: 03/26/2026 04:18
Changes: 03/18/2026 07:22 (78), 03/22/2026 02:49 (12), 03/23/2026 20:21 (7), 03/26/2026 04:18 (4)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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