CVE-2026-41645

MEDIUM EPSS 26.3%
Published May 8, 20261mo ago · Modified Jun 17, 20261w ago
5.3 CVSS 3.1
Medium
Find Similar
Published May 8, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.3
Exploitability
1.6
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
26.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-94 Improper Control of Generation of Code (Code Injection) Injection

Affected Products 1

VendorProductVersionRange
projectdiscoverynuclei*≥3.0.0  –  <3.8.0

References 6

  • github.com https://github.com/projectdiscovery/nuclei/commit/6c803c74d193f85f8a6d9803ce493fd302cad0eb
    Patch
  • github.com https://github.com/projectdiscovery/nuclei/commit/d2217320162d5782ca7cb95bef9dda17063818f3
    Patch
  • github.com https://github.com/projectdiscovery/nuclei/pull/7221
    Issue TrackingPatch
  • github.com https://github.com/projectdiscovery/nuclei/pull/7321
    Issue TrackingPatch
  • github.com https://github.com/projectdiscovery/nuclei/releases/tag/v3.8.0
    ProductRelease Notes
  • github.com https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-jm34-66cf-qpvr
    MitigationPatchVendor Advisory

Remediation

  • github.com https://github.com/projectdiscovery/nuclei/commit/6c803c74d193f85f8a6d9803ce493fd302cad0eb
    Patch
  • github.com https://github.com/projectdiscovery/nuclei/commit/d2217320162d5782ca7cb95bef9dda17063818f3
    Patch
  • github.com https://github.com/projectdiscovery/nuclei/pull/7221
    Issue TrackingPatch
  • github.com https://github.com/projectdiscovery/nuclei/pull/7321
    Issue TrackingPatch
  • github.com https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-jm34-66cf-qpvr
    MitigationPatchVendor Advisory