{"cve":"CVE-2026-41645","nvd":{"published":"2026-05-08T04:16:18.177","modified":"2026-10-26T20:10:00.160","status":"Analyzed","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","score":5.3},"cwes":["CWE-94"],"references":["https://github.com/projectdiscovery/nuclei/commit/6c803c74d193f85f8a6d9803ce493fd302cad0eb","https://github.com/projectdiscovery/nuclei/commit/d2217320162d5782ca7cb95bef9dda17063818f3","https://github.com/projectdiscovery/nuclei/pull/7221","https://github.com/projectdiscovery/nuclei/pull/7321","https://github.com/projectdiscovery/nuclei/releases/tag/v3.8.0"],"products":["projectdiscovery:nuclei"],"source":"nvd","synced_at":"2026-10-26T20:34:58.897451322+00:00"},"epss":{"cve":"CVE-2026-41645","score":0.00351,"percentile":0.28516,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-jm34-66cf-qpvr","url":"https://osv.dev/vulnerability/GHSA-jm34-66cf-qpvr","summary":"Nuclei: Environment variable disclosure via Response-Derived DSL Expressions","modified":"2026-07-08T08:26:19.015298611Z","packages":[{"ecosystem":"Go","name":"github.com/projectdiscovery/nuclei/v3","purl":"pkg:golang/github.com/projectdiscovery/nuclei/v3","ranges":[">=3.0.0 <3.8.0"],"fixed":["3.8.0"]}]},{"id":"GO-2026-5473","url":"https://osv.dev/vulnerability/GO-2026-5473","summary":"Nuclei: Environment variable disclosure via Response-Derived DSL Expressions in github.com/projectdiscovery/nuclei","modified":"2026-07-08T08:26:19.015298611Z","packages":[{"ecosystem":"Go","name":"github.com/projectdiscovery/nuclei","purl":"pkg:golang/github.com/projectdiscovery/nuclei","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/projectdiscovery/nuclei/v2","purl":"pkg:golang/github.com/projectdiscovery/nuclei/v2","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/projectdiscovery/nuclei/v3","purl":"pkg:golang/github.com/projectdiscovery/nuclei/v3","ranges":[">=3.0.0 <3.8.0"],"fixed":["3.8.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}