Unrated

DEBIAN-CVE-2026-35025

Type: advisorySource: OSV1 source record

ProFTPD through 1.3.9b and 1.3.10rc2 contains an access control bypass vulnerability that allows authenticated FTP users to circumvent Directory ACL restrictions by prefixing paths with /proc/self/root in the RNFR command handler. Attackers can exploit the unresolved symlink components in dir_canonical_path() to cause dir_check() to perform lexical path comparisons that match no configured Directory block, enabling rename operations on files in DenyAll-protected directories and subsequent retrieval of those files. Mitigation: Sessions configured with DefaultRoot (chroot) are not affected, as chroot changes the directory to which /proc/self/root resolves.

Announced 24 Jun 2026Source revision 1

Original source ↗

DEBIAN-CVE-2026-35025

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-2026-35025

proftpd-dfsg

Source reference: /affected/0/package/name

Affected versions: 1.3.8+dfsg-4
Source reference: /affected/0/versions
1.3.8+dfsg-4+deb12u1
Source reference: /affected/0/versions
1.3.8+dfsg-4+deb12u2
Source reference: /affected/0/versions
1.3.8+dfsg-4+deb12u3
Source reference: /affected/0/versions
1.3.8+dfsg-4+deb12u4
Source reference: /affected/0/versions
1.3.8+dfsg-4+deb12u5
Source reference: /affected/0/versions
1.3.8+dfsg-5
Source reference: /affected/0/versions
1.3.8+dfsg-6
Source reference: /affected/0/versions
1.3.8+dfsg-7
Source reference: /affected/0/versions
1.3.8+dfsg-8
Source reference: /affected/0/versions
1.3.8.a+dfsg-1
Source reference: /affected/0/versions
1.3.8.b+dfsg-1
Source reference: /affected/0/versions
1.3.8.b+dfsg-2
Source reference: /affected/0/versions
1.3.8.b+dfsg-3
Source reference: /affected/0/versions
1.3.8.b+dfsg-4
Source reference: /affected/0/versions
1.3.8.c+dfsg-1
Source reference: /affected/0/versions
1.3.8.c+dfsg-2
Source reference: /affected/0/versions
1.3.8.c+dfsg-3
Source reference: /affected/0/versions
1.3.8.c+dfsg-4
Source reference: /affected/0/versions
1.3.9a~dfsg-1
Source reference: /affected/0/versions
1.3.9b~dfsg-1
Source reference: /affected/0/versions
1.3.9c~dfsg-1
Source reference: /affected/0/versions
1.3.9d~dfsg-1
Source reference: /affected/0/versions
1.3.9~dfsg-1
Source reference: /affected/0/versions
1.3.9~dfsg-2
Source reference: /affected/0/versions
1.3.9~dfsg-3
Source reference: /affected/0/versions
1.3.9~dfsg-4
Source reference: /affected/0/versions
1.3.9~dfsg-5
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

proftpd-dfsg

Source reference: /affected/1/package/name

Affected versions: 1.3.8.c+dfsg-4
Source reference: /affected/1/versions
1.3.8.c+dfsg-4+deb13u1
Source reference: /affected/1/versions
1.3.8.c+dfsg-4+deb13u2
Source reference: /affected/1/versions
1.3.8.c+dfsg-4+deb13u3
Source reference: /affected/1/versions
1.3.9a~dfsg-1
Source reference: /affected/1/versions
1.3.9b~dfsg-1
Source reference: /affected/1/versions
1.3.9c~dfsg-1
Source reference: /affected/1/versions
1.3.9d~dfsg-1
Source reference: /affected/1/versions
1.3.9~dfsg-1
Source reference: /affected/1/versions
1.3.9~dfsg-2
Source reference: /affected/1/versions
1.3.9~dfsg-3
Source reference: /affected/1/versions
1.3.9~dfsg-4
Source reference: /affected/1/versions
1.3.9~dfsg-5
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

proftpd-dfsg

Source reference: /affected/2/package/name

Affected versions: 1.3.8.c+dfsg-4
Source reference: /affected/2/versions
1.3.9a~dfsg-1
Source reference: /affected/2/versions
1.3.9b~dfsg-1
Source reference: /affected/2/versions
1.3.9c~dfsg-1
Source reference: /affected/2/versions
1.3.9d~dfsg-1
Source reference: /affected/2/versions
1.3.9~dfsg-1
Source reference: /affected/2/versions
1.3.9~dfsg-2
Source reference: /affected/2/versions
1.3.9~dfsg-3
Source reference: /affected/2/versions
1.3.9~dfsg-4
Source reference: /affected/2/versions
1.3.9~dfsg-5
Source reference: /affected/2/versions
Fixed versions: Not stated in this record
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": "proftpd-dfsg",
      "purl": "pkg:deb/debian/proftpd-dfsg?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.3.8+dfsg-4",
      "1.3.8+dfsg-4+deb12u1",
      "1.3.8+dfsg-4+deb12u2",
      "1.3.8+dfsg-4+deb12u3",
      "1.3.8+dfsg-4+deb12u4",
      "1.3.8+dfsg-4+deb12u5",
      "1.3.8+dfsg-5",
      "1.3.8+dfsg-6",
      "1.3.8+dfsg-7",
      "1.3.8+dfsg-8",
      "1.3.8.a+dfsg-1",
      "1.3.8.b+dfsg-1",
      "1.3.8.b+dfsg-2",
      "1.3.8.b+dfsg-3",
      "1.3.8.b+dfsg-4",
      "1.3.8.c+dfsg-1",
      "1.3.8.c+dfsg-2",
      "1.3.8.c+dfsg-3",
      "1.3.8.c+dfsg-4",
      "1.3.9a~dfsg-1",
      "1.3.9b~dfsg-1",
      "1.3.9c~dfsg-1",
      "1.3.9d~dfsg-1",
      "1.3.9~dfsg-1",
      "1.3.9~dfsg-2",
      "1.3.9~dfsg-3",
      "1.3.9~dfsg-4",
      "1.3.9~dfsg-5"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-35025.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "proftpd-dfsg",
      "purl": "pkg:deb/debian/proftpd-dfsg?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.3.8.c+dfsg-4",
      "1.3.8.c+dfsg-4+deb13u1",
      "1.3.8.c+dfsg-4+deb13u2",
      "1.3.8.c+dfsg-4+deb13u3",
      "1.3.9a~dfsg-1",
      "1.3.9b~dfsg-1",
      "1.3.9c~dfsg-1",
      "1.3.9d~dfsg-1",
      "1.3.9~dfsg-1",
      "1.3.9~dfsg-2",
      "1.3.9~dfsg-3",
      "1.3.9~dfsg-4",
      "1.3.9~dfsg-5"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-35025.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "proftpd-dfsg",
      "purl": "pkg:deb/debian/proftpd-dfsg?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.3.8.c+dfsg-4",
      "1.3.9a~dfsg-1",
      "1.3.9b~dfsg-1",
      "1.3.9c~dfsg-1",
      "1.3.9d~dfsg-1",
      "1.3.9~dfsg-1",
      "1.3.9~dfsg-2",
      "1.3.9~dfsg-3",
      "1.3.9~dfsg-4",
      "1.3.9~dfsg-5"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-35025.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #55973 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 16:16:55 GMT
Publisher date: Wed, 24 Jun 2026 14:17:30 GMT

Read the original announcement