CVE-2026-10291Public exploitNetwork attack vector

Server hang via backtracking regex

Published Jun 1, 2026 · Updated Jun 1, 2026

Regular-expression denial of service in Enderfga Claw Orchestrator before 3.7.1 allows remote attackers to hang the server. The /session/grep endpoint passes body.pattern to validateRegex, which compiles untrusted patterns with V8 RegExp and permits exponential backtracking. An existing session is required; authentication is the default only from 3.5.6, and a crafted search blocks the shared Node.js event loop.

CVSS severity4.3
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Regular-expression denial of service in Enderfga Claw Orchestrator before 3.7.1 allows remote attackers to hang the server. The /session/grep endpoint passes body.pattern to validateRegex, which compiles untrusted patterns with V8 RegExp and permits exponential backtracking. An existing session is required; authentication is the default only from 3.5.6, and a crafted search blocks the shared Node.js event loop.

The record

CVE
CVE-2026-10291
Published
Jun 1, 2026
Updated
Jun 1, 2026
Vendor
Enderfga
Product
Claw Orchestrator
Classifications
CWE-1333, CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0
  2. Affected versionversion=3.1
  3. Affected versionversion=3.2
  4. Affected versionversion=3.3
  5. Affected versionversion=3.4
  6. Affected versionversion=3.5
  7. Affected versionversion=3.6
  8. Affected versionversion=3.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Enderfga · Claw Orchestratorversion=3.0; version=3.1; version=3.2; version=3.3; version=3.4; version=3.5; version=3.6; version=3.7.0

Published CVSS scores

4.0VulDBAV:N/AC:L/Au:S/C:N/I:N/A:P
4.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1333Inefficient Regular Expression Complexity
CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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