UnratedFix available

DEBIAN-CVE-2026-32877

Type: advisorySource: OSV1 source record

Botan is a C++ cryptography library. From version 2.3.0 to before version 3.11.0, during SM2 decryption, the code that checked the authentication code value (C3) failed to check that the encoded value was of the expected length prior to comparison. An invalid ciphertext can cause a heap over-read of up to 31 bytes, resulting in a crash or potentially other undefined behavior. This issue has been patched in version 3.11.0.

Announced 30 Mar 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-32877

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-2026-32877

botan

Source reference: /affected/0/package/name

Affected versions: 2.19.3+dfsg-1
Source reference: /affected/0/versions
2.19.3+dfsg-1+deb12u1
Source reference: /affected/0/versions
2.19.4+dfsg-1
Source reference: /affected/0/versions
2.19.5+dfsg-1
Source reference: /affected/0/versions
2.19.5+dfsg-2
Source reference: /affected/0/versions
2.19.5+dfsg-3
Source reference: /affected/0/versions
2.19.5+dfsg-4
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

botan

Source reference: /affected/1/package/name

Affected versions: 2.19.5+dfsg-4
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

botan3

Source reference: /affected/2/package/name

Affected versions: 3.10.0+dfsg-1
Source reference: /affected/2/versions
3.10.0+dfsg-2
Source reference: /affected/2/versions
3.11.0+dfsg-1
Source reference: /affected/2/versions
3.7.1+dfsg-2
Source reference: /affected/2/versions
3.8.1+dfsg-1
Source reference: /affected/2/versions
3.9.0+dfsg-1
Source reference: /affected/2/versions
3.9.0+dfsg-2
Source reference: /affected/2/versions
3.9.0+dfsg-2.1
Source reference: /affected/2/versions
Fixed versions: 3.11.0+dfsg-2
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

botan3

Source reference: /affected/3/package/name

Affected versions: 3.10.0+dfsg-1
Source reference: /affected/3/versions
3.10.0+dfsg-2
Source reference: /affected/3/versions
3.11.0+dfsg-1
Source reference: /affected/3/versions
3.7.1+dfsg-2
Source reference: /affected/3/versions
3.8.1+dfsg-1
Source reference: /affected/3/versions
3.9.0+dfsg-1
Source reference: /affected/3/versions
3.9.0+dfsg-2
Source reference: /affected/3/versions
3.9.0+dfsg-2.1
Source reference: /affected/3/versions
Fixed versions: 3.11.0+dfsg-2
Source reference: /affected/3/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": "botan",
      "purl": "pkg:deb/debian/botan?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2.19.3+dfsg-1",
      "2.19.3+dfsg-1+deb12u1",
      "2.19.4+dfsg-1",
      "2.19.5+dfsg-1",
      "2.19.5+dfsg-2",
      "2.19.5+dfsg-3",
      "2.19.5+dfsg-4"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32877.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "botan",
      "purl": "pkg:deb/debian/botan?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2.19.5+dfsg-4"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32877.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.11.0+dfsg-2"
          }
        ]
      }
    ],
    "package": {
      "name": "botan3",
      "purl": "pkg:deb/debian/botan3?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "3.10.0+dfsg-1",
      "3.10.0+dfsg-2",
      "3.11.0+dfsg-1",
      "3.7.1+dfsg-2",
      "3.8.1+dfsg-1",
      "3.9.0+dfsg-1",
      "3.9.0+dfsg-2",
      "3.9.0+dfsg-2.1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32877.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.11.0+dfsg-2"
          }
        ]
      }
    ],
    "package": {
      "name": "botan3",
      "purl": "pkg:deb/debian/botan3?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "3.10.0+dfsg-1",
      "3.10.0+dfsg-2",
      "3.11.0+dfsg-1",
      "3.7.1+dfsg-2",
      "3.8.1+dfsg-1",
      "3.9.0+dfsg-1",
      "3.9.0+dfsg-2",
      "3.9.0+dfsg-2.1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32877.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #56431 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 16:37:29 GMT
Publisher date: Mon, 30 Mar 2026 21:17:09 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-32877 · Revision 1Source updated