DEBIAN-CVE-2026-8711

Source
https://security-tracker.debian.org/tracker/CVE-2026-8711
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8711.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-8711
Upstream
Published
2026-05-19T15:16:33Z
Modified
2026-09-14T17:03:57Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:14 / libnginx-mod-js

Package

Name
libnginx-mod-js
Purl
pkg:deb/debian/libnginx-mod-js?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.9.9-1

Affected versions

0.*
0.8.9-1
0.9.1-1
0.9.4-1
0.9.6-1
0.9.8-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8711.json"