CVE-2026-76803: projectdiscovery nuclei · Improper Access Control
Affects projectdiscovery nucleiSource CVE Database V5
Not known to be exploited · CVSS 5.3 Medium : upgrade to 3.10.0 when convenient.
Data as of 5 Nov 2026, 23:24 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 34% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.10.0
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 22 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.
What to do
Upgrade nuclei and projectdiscovery/nuclei to 3.10.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| projectdiscoverynuclei | Affected
| Fixed in
|
GitHubprojectdiscovery/nucleipkg:github/projectdiscovery/nucleiOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade nuclei to version 3.10.0 or later, where this vulnerability is fixed. Until then, avoid running untrusted JavaScript templates that use the allowAllFiles MySQL DSN option. The vulnerability affects CLI and SDK deployments that accept untrusted templates. No other mitigations are specified.
Description
Nuclei is a vulnerability scanner built on a simple YAML-based DSL. From 3.0.0 until 3.10.0, the nuclei/mysql JavaScript library does not enforce the local-file sandbox when a JavaScript template supplies the allowAllFiles MySQL DSN option. An untrusted javascript: template scanning an attacker-controlled MySQL-compatible endpoint can cause the server to issue LOAD DATA LOCAL INFILE requests for arbitrary paths, after which the scanner's MySQL client reads the files and returns their contents to the server even though -allow-local-file-access is disabled. JavaScript templates can run unsigned and without the -code flag on affected versions, and the bypass affects CLI and SDK deployments that accept untrusted templates. This issue is fixed in version 3.10.0.
References
- github.com/projectdiscovery/nuclei/security/advisories/GHSA-xhmx-w2j4-rw3q (opens in a new tab)
- github.com/projectdiscovery/nuclei/pull/7473 (opens in a new tab)
- github.com/projectdiscovery/nuclei/commit/9611926a9a1ca99e8ed554d1b26fbeff60e06368 (opens in a new tab)
- github.com/projectdiscovery/nuclei/releases/tag/v3.10.0 (opens in a new tab)