Description
Nuclei versions before 3.11.1 cache template signature verification based only on file modification time without content checksums. Attackers can replace verified templates with unsigned malicious content and restore the original modification time to bypass signature checks and execute arbitrary operating system commands.
References7
- github.com/projectdiscovery/nuclei
- github.com/projectdiscovery/nuclei/blob/v3.11.0/pkg/catalog/ind…
- github.com/projectdiscovery/nuclei/blob/v3.11.0/pkg/templates/c…
- github.com/projectdiscovery/nuclei/commit/9de96e4dda5a03da963b9…
- github.com/projectdiscovery/nuclei/issues/7663
- www.vulncheck.com/advisories/nuclei-from-3.7.0-before-3.11.1-te…
- github.com/projectdiscovery/nuclei/issues/7663
Metrics
- CVSS 3.1
-
7.3
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H - CVSS 4.0
-
7.0
HIGH
Score source: CNA
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 2 · as of 8 November 2026
- CWE
- CWE-347
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.