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CVE-2026-41645

MEDIUM

5.3

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.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionREQUIRED

Published5/8/2026

Last Modified5/8/2026

Sourcenvd

Honeypot Sightings0

Affected Products

projectdiscovery:nuclei

Weaknesses (CWE)

CWE-94

References

https://github.com/projectdiscovery/nuclei/commit/6c803c74d193f85f8a6d9803ce493fd302cad0eb(security-advisories@github.com)

https://github.com/projectdiscovery/nuclei/commit/d2217320162d5782ca7cb95bef9dda17063818f3(security-advisories@github.com)

https://github.com/projectdiscovery/nuclei/pull/7221(security-advisories@github.com)

https://github.com/projectdiscovery/nuclei/pull/7321(security-advisories@github.com)

https://github.com/projectdiscovery/nuclei/releases/tag/v3.8.0(security-advisories@github.com)

https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-jm34-66cf-qpvr(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.