RCE in Projectdiscovery Nuclei
CVE-2026-76802
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.
Vulnerability class: Command Injection (OS Command Injection)
Published .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Projectdiscovery Nuclei — versions >= 3.0.0, < 3.10.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-76802?
- CVE-2026-76802 is a medium-severity vulnerability in Projectdiscovery Nuclei, classified under OS Command Injection. CVSS score: 4.7/10. Published 2026-09-22.
- How severe is CVE-2026-76802?
- Medium severity. CVSS v3 base score is 4.7 out of 10.