DEBIAN-CVE-2026-8711
NGINX JavaScript has a vulnerability when the js_fetch_proxy directive is configured with at least one client-controlled NGINX variable (for example, $http_*, $arg_*, $cookie_*) and a location invoking the ngx.fetch() operation from NGINX JavaScript. An unauthenticated attacker can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
DEBIAN-CVE-2026-8711
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:DEBIAN-CVE-2026-8711
libnginx-mod-js
Source reference: /affected/0/package/name
- Affected versions
- 0.8.9-1
Source reference:
/affected/0/versions0.9.1-1Source reference:
/affected/0/versions0.9.4-1Source reference:
/affected/0/versions0.9.6-1Source reference:
/affected/0/versions0.9.8-1Source reference:
/affected/0/versions - Fixed versions
- 0.9.9-1
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": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.9-1"
}
]
}
],
"package": {
"name": "libnginx-mod-js",
"purl": "pkg:deb/debian/libnginx-mod-js?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.8.9-1",
"0.9.1-1",
"0.9.4-1",
"0.9.6-1",
"0.9.8-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8711.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58494 · Revision 1
- Added to Heist Feed
- Publisher date