CVE-2026-41645
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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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/projectdiscovery/nuclei/v3Go | >= 3.0.0, < 3.8.0 | 3.8.0 |
Affected products
2Patches
Vulnerability mechanics
References
8- github.com/projectdiscovery/nuclei/commit/6c803c74d193f85f8a6d9803ce493fd302cad0ebnvdPatchWEB
- github.com/projectdiscovery/nuclei/commit/d2217320162d5782ca7cb95bef9dda17063818f3nvdPatchWEB
- github.com/projectdiscovery/nuclei/pull/7221nvdIssue TrackingPatchWEB
- github.com/projectdiscovery/nuclei/pull/7321nvdIssue TrackingPatchWEB
- github.com/projectdiscovery/nuclei/security/advisories/GHSA-jm34-66cf-qpvrnvdMitigationPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-jm34-66cf-qpvrghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-41645ghsaADVISORY
- github.com/projectdiscovery/nuclei/releases/tag/v3.8.0nvdProductRelease NotesWEB
News mentions
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