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VulnerabilityPublished Updated

CVE-2026-76803: projectdiscovery nuclei · Improper Access Control

Affects projectdiscovery nucleiSource CVE Database V5

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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

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
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:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
projectdiscoverynucleiAffected
  • >=3.0.0 <3.10.0
Fixed in
  • 3.10.0
GitHubprojectdiscovery/nucleipkg:github/projectdiscovery/nucleiOther threatsAffected
  • >=3.0.0 <3.10.0
Fixed in
  • 3.10.0

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

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