{"id":"CVE-2026-41645","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-41645","generatedAt":"2026-10-28T09:27:07.884Z","title":"Nuclei is a vulnerability scanner built on a simple YAML-based DSL.","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.","published":"2026-05-08T04:16:18.000Z","lastModified":"2026-10-26T20:10:00.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N"},"cwe":["CWE-94"],"affected":["projectdiscovery/nuclei"],"epss":{"score":0.00351,"percentile":0.28578,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.35%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/projectdiscovery/nuclei/commit/6c803c74d193f85f8a6d9803ce493fd302cad0eb","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/projectdiscovery/nuclei/commit/d2217320162d5782ca7cb95bef9dda17063818f3","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/projectdiscovery/nuclei/pull/7221","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/projectdiscovery/nuclei/pull/7321","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/projectdiscovery/nuclei/releases/tag/v3.8.0","tags":["Product","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-jm34-66cf-qpvr","tags":["Mitigation","Patch","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-41645","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}