CVE-2026-41645

5.3 MEDIUM
Published: May 08, 2026 Modified: May 08, 2026
View on NVD

Description

Nuclei is a vulnerability scanner built on a simple YAML-based DSL. From version 3.0.0 to before version 3.8.0, a vulnerability in Nuclei's expression evaluation engine makes it possible for a malicious target server to inject and execute supported DSL expressions. This happens when HTTP response data containing helper/function syntax gets reused by multi-step templates. If the -env-vars / -ev option is explicitly enabled, this can expose host environment variables. That option is off by default, so standard configurations are not affected by the information disclosure risk. This issue has been patched in version 3.8.0.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/projectdiscovery/nuclei/pull/7221
Source: security-advisories@github.com
Issue Tracking Patch
https://github.com/projectdiscovery/nuclei/pull/7321
Source: security-advisories@github.com
Issue Tracking Patch
https://github.com/projectdiscovery/nuclei/releases/tag/v3.8.0
Source: security-advisories@github.com
Product Release Notes
https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-jm34-66cf-qpvr
Source: security-advisories@github.com
Mitigation Patch Vendor Advisory

6 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.3%
26th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

projectdiscovery