Vulnerability · Published Sep 22, 2026 · Assigned by GitHub_M

CVE-2026-76802Nuclei: Arbitrary Command Execution via DAST Code Signature Bypass

Medium 4.7

In plain English

A medium-severity OS command injection in nuclei from projectdiscovery. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.7Medium

Exploit odds (30 days)0.2%top 92.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Nuclei is a vulnerability scanner built on a simple YAML-based DSL. From 3.0.0 until 3.10.0, the DAST template loading branch does not apply the unsigned code-template signature check before accepting a template that contains both a fuzzing: block and an unsigned code: block. When an operator enables -dast, an untrusted multiprotocol template can place an unsigned code request into the execution queue and run arbitrary shell commands even without -code or a valid cryptographic signature. The issue affects CLI DAST scans and SDK integrations that enable DAST while accepting attacker-supplied templates. This issue is fixed in version 3.10.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/projectdiscovery/nuclei	no fix listed	GO-2026-6570
Go	github.com/projectdiscovery/nuclei/v2	no fix listed	GO-2026-6570
Go	github.com/projectdiscovery/nuclei/v3	3.10.0	GHSA-jpf4-98qj-qr67
Go	github.com/projectdiscovery/nuclei/v3	3.10.0	GO-2026-6570

Affected products (as reported)

Vendor	Product	Versions
projectdiscovery	nuclei	>= 3.0.0, < 3.10.0

Weakness: CWE-78 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

References

https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-jpf4-98qj-qr67 x_refsource_CONFIRM
https://github.com/projectdiscovery/nuclei/pull/7472 x_refsource_MISC
https://github.com/projectdiscovery/nuclei/commit/1c440e755a97471c56fb0276ee8a8c4132974645 x_refsource_MISC
https://github.com/projectdiscovery/nuclei/releases/tag/v3.10.0 x_refsource_MISC