Nuclei: Arbitrary Code Execution via Goja JavaScript Engine Vulnerability
A vulnerability in the Goja JavaScript engine used by Nuclei's `javascript:` protocol allows arbitrary native code execution on the scanner host when running untrusted JavaScript templates. **Affected Component** The issue is in the Goja JavaScript runtime embedded in Nuclei's JavaScript protocol (`pkg/js/`). An out-of-bounds heap write in the engine can be exploited to achieve native code execution during template evaluation. **Description** Nuclei uses the Goja engine to execute `javascript:` protocol templates. A memory safety vulnerability in Goja allows attacker-controlled JavaScript to corrupt heap memory and execute arbitrary native code on the host running Nuclei. Because `javascript:` templates execute without the `-code` flag and unsigned JavaScript templates run by default, a malicious template from an untrusted source can trigger code execution during a normal scan. The vulnerability could also be reached through a template's `init` section, which runs during template initialization before other security checks complete. > [!NOTE] JavaScript templates do not require the `-code` flag and are not subject to the code-template signing requirement on affected versions. Nuclei v3.11.0 adds a separate signing requirement for JavaScript templates as additional defense in depth. **Affected Users** - **CLI users** running untrusted or third-party `javascript:` templates. - **SDK users** who integrate Nuclei into platforms where end users can supply JavaScript templates. **P
GHSA-vxg7-f2jj-jmqm
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GHSA-vxg7-f2jj-jmqm
github.com/projectdiscovery/nuclei/v3
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 3.10.0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.10.0"
}
]
}
],
"package": {
"name": "github.com/projectdiscovery/nuclei/v3",
"purl": "pkg:golang/github.com/projectdiscovery/nuclei/v3",
"ecosystem": "Go"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-vxg7-f2jj-jmqm/GHSA-vxg7-f2jj-jmqm.json"
}
}
]- Related CVEs
- CVE-2026-76819
Source reference:
/aliases
Publisher severity
high
Source reference: /database_specific/severity
- Event
- #63886 · Revision 1
- Added to Heist Feed
- Publisher date
GO-2026-6575
Revision 2
Nuclei: Arbitrary Code Execution via Goja JavaScript Engine Vulnerability in github.com/projectdiscovery/nuclei
Nuclei: Arbitrary Code Execution via Goja JavaScript Engine Vulnerability in github.com/projectdiscovery/nuclei
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GO-2026-6575
github.com/projectdiscovery/nuclei
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
github.com/projectdiscovery/nuclei/v2
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
github.com/projectdiscovery/nuclei/v3
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 3.10.0
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "github.com/projectdiscovery/nuclei",
"purl": "pkg:golang/github.com/projectdiscovery/nuclei",
"ecosystem": "Go"
},
"database_specific": {
"source": "https://vuln.go.dev/ID/GO-2026-6575.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "github.com/projectdiscovery/nuclei/v2",
"purl": "pkg:golang/github.com/projectdiscovery/nuclei/v2",
"ecosystem": "Go"
},
"database_specific": {
"source": "https://vuln.go.dev/ID/GO-2026-6575.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.10.0"
}
]
}
],
"package": {
"name": "github.com/projectdiscovery/nuclei/v3",
"purl": "pkg:golang/github.com/projectdiscovery/nuclei/v3",
"ecosystem": "Go"
},
"database_specific": {
"source": "https://vuln.go.dev/ID/GO-2026-6575.json"
},
"ecosystem_specific": {}
}
]- Related CVEs
- CVE-2026-76819
Source reference:
/aliases
Publisher severity
No explicit severity was provided.
- Event
- #63887 · Revision 2
- Added to Heist Feed
- Publisher date