Skip to content
Heist/ feed
UnratedFix available

DEBIAN-CVE-2026-9697

Type: advisorySource: OSV1 source record

Impact: undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI (socks5:// or socks://). The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servername settings. Applications that pin to an internal or corporate CA via requestTls.ca will, when their proxy URI is SOCKS5, get the default Mozilla CA bundle as the trust anchor instead. Any cert signed by any publicly-trusted CA for the target hostname is accepted, breaking the intended pin and enabling MITM read and tamper of the HTTPS exchange. Affected applications are those that use undici's ProxyAgent (or Socks5ProxyAgent directly) with SOCKS5 AND rely on requestTls for TLS scope restriction. The bug was introduced in undici 7.23.0 when SOCKS5 support was added. Patches: Upgrade to undici v7.28.0 or v8.5.0. Workarounds: No workaround is available within the SOCKS5 path. If a SOCKS5 proxy with TLS scope restriction is required and an upgrade is not yet possible, route the traffic through an HTTP-proxy ProxyAgent instead, where requestTls is honored correctly.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-9697

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-2026-9697

node-undici

Source reference: /affected/0/package/name

Affected versions
7.15.0+dfsg+~cs3.2.0-1

Source reference: /affected/0/versions

7.15.0+dfsg+~cs3.2.0-3

Source reference: /affected/0/versions

7.16.0+dfsg+~cs3.2.0-1

Source reference: /affected/0/versions

7.16.0+dfsg+~cs3.2.0-2

Source reference: /affected/0/versions

7.18.2+dfsg+~cs3.2.0-1

Source reference: /affected/0/versions

7.24.5+dfsg+~cs3.2.0-1

Source reference: /affected/0/versions

7.24.6+dfsg+~cs3.2.0-1

Source reference: /affected/0/versions

7.24.6+dfsg+~cs3.2.0-2

Source reference: /affected/0/versions

7.24.6+dfsg+~cs3.2.0-3

Source reference: /affected/0/versions

7.3.0+dfsg1+~cs24.12.11-1

Source reference: /affected/0/versions

7.3.0+dfsg1+~cs24.12.11-2

Source reference: /affected/0/versions

8.10.2+dfsg+~cs3.2.2-1

Source reference: /affected/0/versions

8.5.0+dfsg+~cs3.2.0-1

Source reference: /affected/0/versions

8.5.0+dfsg+~cs3.2.0-2

Source reference: /affected/0/versions

8.5.0+dfsg+~cs3.2.0-3

Source reference: /affected/0/versions

8.9.0+dfsg+~cs3.2.0-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

node-undici

Source reference: /affected/1/package/name

Affected versions
7.15.0+dfsg+~cs3.2.0-1

Source reference: /affected/1/versions

7.15.0+dfsg+~cs3.2.0-3

Source reference: /affected/1/versions

7.16.0+dfsg+~cs3.2.0-1

Source reference: /affected/1/versions

7.16.0+dfsg+~cs3.2.0-2

Source reference: /affected/1/versions

7.18.2+dfsg+~cs3.2.0-1

Source reference: /affected/1/versions

7.24.5+dfsg+~cs3.2.0-1

Source reference: /affected/1/versions

7.24.6+dfsg+~cs3.2.0-1

Source reference: /affected/1/versions

7.24.6+dfsg+~cs3.2.0-2

Source reference: /affected/1/versions

7.24.6+dfsg+~cs3.2.0-3

Source reference: /affected/1/versions

7.3.0+dfsg1+~cs24.12.11-1

Source reference: /affected/1/versions

7.3.0+dfsg1+~cs24.12.11-2

Source reference: /affected/1/versions

Fixed versions
8.5.0+dfsg+~cs3.2.0-1

Source reference: /affected/1/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"
          }
        ]
      }
    ],
    "package": {
      "name": "node-undici",
      "purl": "pkg:deb/debian/node-undici?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "7.15.0+dfsg+~cs3.2.0-1",
      "7.15.0+dfsg+~cs3.2.0-3",
      "7.16.0+dfsg+~cs3.2.0-1",
      "7.16.0+dfsg+~cs3.2.0-2",
      "7.18.2+dfsg+~cs3.2.0-1",
      "7.24.5+dfsg+~cs3.2.0-1",
      "7.24.6+dfsg+~cs3.2.0-1",
      "7.24.6+dfsg+~cs3.2.0-2",
      "7.24.6+dfsg+~cs3.2.0-3",
      "7.3.0+dfsg1+~cs24.12.11-1",
      "7.3.0+dfsg1+~cs24.12.11-2",
      "8.10.2+dfsg+~cs3.2.2-1",
      "8.5.0+dfsg+~cs3.2.0-1",
      "8.5.0+dfsg+~cs3.2.0-2",
      "8.5.0+dfsg+~cs3.2.0-3",
      "8.9.0+dfsg+~cs3.2.0-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9697.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "8.5.0+dfsg+~cs3.2.0-1"
          }
        ]
      }
    ],
    "package": {
      "name": "node-undici",
      "purl": "pkg:deb/debian/node-undici?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "7.15.0+dfsg+~cs3.2.0-1",
      "7.15.0+dfsg+~cs3.2.0-3",
      "7.16.0+dfsg+~cs3.2.0-1",
      "7.16.0+dfsg+~cs3.2.0-2",
      "7.18.2+dfsg+~cs3.2.0-1",
      "7.24.5+dfsg+~cs3.2.0-1",
      "7.24.6+dfsg+~cs3.2.0-1",
      "7.24.6+dfsg+~cs3.2.0-2",
      "7.24.6+dfsg+~cs3.2.0-3",
      "7.3.0+dfsg1+~cs24.12.11-1",
      "7.3.0+dfsg1+~cs24.12.11-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9697.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57010 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement