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DEBIAN-CVE-2026-0994

Type: advisorySource: OSV1 source record

A denial-of-service (DoS) vulnerability exists in google.protobuf.json_format.ParseDict() in Python, where the max_recursion_depth limit can be bypassed when parsing nested google.protobuf.Any messages. Due to missing recursion depth accounting inside the internal Any-handling logic, an attacker can supply deeply nested Any structures that bypass the intended recursion limit, eventually exhausting Python’s recursion stack and causing a RecursionError.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-0994

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-2026-0994

protobuf

Source reference: /affected/0/package/name

Affected versions
3.21.12-3

Source reference: /affected/0/versions

Fixed versions
3.21.12-3+deb12u1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

protobuf

Source reference: /affected/1/package/name

Affected versions
3.21.12-11

Source reference: /affected/1/versions

Fixed versions
3.21.12-11+deb13u1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

protobuf

Source reference: /affected/2/package/name

Affected versions
3.21.12-11

Source reference: /affected/2/versions

3.21.12-12

Source reference: /affected/2/versions

3.21.12-13

Source reference: /affected/2/versions

3.21.12-14

Source reference: /affected/2/versions

3.21.12-15

Source reference: /affected/2/versions

Fixed versions
3.21.12-16

Source reference: /affected/2/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": "3.21.12-3+deb12u1"
          }
        ]
      }
    ],
    "package": {
      "name": "protobuf",
      "purl": "pkg:deb/debian/protobuf?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "3.21.12-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-0994.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.21.12-11+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "protobuf",
      "purl": "pkg:deb/debian/protobuf?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "3.21.12-11"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-0994.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.21.12-16"
          }
        ]
      }
    ],
    "package": {
      "name": "protobuf",
      "purl": "pkg:deb/debian/protobuf?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "3.21.12-11",
      "3.21.12-12",
      "3.21.12-13",
      "3.21.12-14",
      "3.21.12-15"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-0994.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#55422 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-0994 · Revision 1Source updated