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DEBIAN-CVE-2026-18329

Type: advisorySource: OSV1 source record

Description NGINX JavaScript (njs) and QuickJS (qjs) engines have a vulnerability when a js_access handler performs asynchronous request body processing and an exception is thrown during asynchronous access-control evaluation before an explicit access denial is returned. An unauthenticated attacker can exploit this vulnerability by sending a crafted HTTP request that triggers an error condition in the access validation logic. This may cause the js_access phase to fail open, allowing the request to proceed instead of being denied, resulting in an authentication or authorization bypass and unauthorized access to protected resources. Impact This vulnerability may allow remote attackers to bypass js_access controls. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-18329

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-2026-18329

libnginx-mod-js

Source reference: /affected/0/package/name

Affected versions
0.8.9-1

Source reference: /affected/0/versions

0.9.1-1

Source reference: /affected/0/versions

0.9.4-1

Source reference: /affected/0/versions

0.9.6-1

Source reference: /affected/0/versions

0.9.8-1

Source reference: /affected/0/versions

0.9.9-1

Source reference: /affected/0/versions

0.9.9-2

Source reference: /affected/0/versions

1.0.0-1

Source reference: /affected/0/versions

1.0.0-2

Source reference: /affected/0/versions

1.0.0-3

Source reference: /affected/0/versions

1.0.0-4

Source reference: /affected/0/versions

Fixed versions
1.0.1-1

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": "1.0.1-1"
          }
        ]
      }
    ],
    "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",
      "0.9.9-1",
      "0.9.9-2",
      "1.0.0-1",
      "1.0.0-2",
      "1.0.0-3",
      "1.0.0-4"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18329.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#55555 · Revision 1
Added to Heist Feed
Publisher date
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