CVE catalog

CVE-2025-6196

libgepub affected and fixed versions

A flaw was found in libgepub, a library used to read EPUB files. The software mishandles file size calculations when opening specially crafted EPUB files, leading to incorrect memory allocations. This issue causes the application to crash. Known affected usage includes desktop services like Tumbler, which may process malicious files automatically when browsing directories. While no direct remote attack vectors are confirmed, any application using libgepub to parse user-supplied EPUB content could be vulnerable to a denial of service.

Severity: Medium · CVSS 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published: Jun 17, 2025, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.24% · Oct 27, 2026

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence

Original provider fields

{
  "package_releases": [
    {
      "name": "libgepub",
      "status": "fixed",
      "release": "sid",
      "version": "0.7.3-4"
    },
    {
      "name": "libgepub",
      "status": "fixed",
      "release": "forky",
      "version": "0.7.3-4"
    },
    {
      "name": "libgepub",
      "status": "fixed",
      "release": "trixie",
      "version": "0.7.3-1"
    },
    {
      "name": "libgepub",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "0.7.0-2"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "libgepub",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "0.7.3-1"
    },
    {
      "bug": null,
      "name": "libgepub",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "0.7.3-1"
    },
    {
      "bug": null,
      "name": "libgepub",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "0.7.3-1"
    },
    {
      "bug": null,
      "name": "libgepub",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "libgepub",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "18.04",
      "versions": [
        "0.5.2-1",
        "0.5.2-2",
        "0.5.3-1",
        "0.6.0-1"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2025-6196"
    },
    {
      "name": "libgepub",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "20.04",
      "versions": [
        "0.6.0-2"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2025-6196"
    },
    {
      "name": "libgepub",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "22.04",
      "versions": [
        "0.6.0-2"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2025-6196"
    },
    {
      "name": "libgepub",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "24.04",
      "versions": [
        "0.7.1-1",
        "0.7.1-2",
        "0.7.1-2build1",
        "0.7.1-2build2"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2025-6196"
    },
    {
      "name": "libgepub",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.0-150200.3.5.1"
            }
          ]
        }
      ],
      "release": "linux enterprise module for package hub 15 sp6",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "0.6.0-150200.3.5.1",
      "provider_record_id": "SUSE-SU-2025:02213-1"
    },
    {
      "name": "libgepub",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.0-150200.3.5.1"
            }
          ]
        }
      ],
      "release": "linux enterprise module for package hub 15 sp7",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "0.6.0-150200.3.5.1",
      "provider_record_id": "SUSE-SU-2025:02213-1"
    },
    {
      "name": "libgepub",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.1-150600.3.5.1"
            }
          ]
        }
      ],
      "release": "linux enterprise module for package hub 15 sp6",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "0.7.1-150600.3.5.1",
      "provider_record_id": "SUSE-SU-2025:02222-1"
    },
    {
      "name": "libgepub",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.1-150600.3.5.1"
            }
          ]
        }
      ],
      "release": "linux enterprise module for package hub 15 sp7",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "0.7.1-150600.3.5.1",
      "provider_record_id": "SUSE-SU-2025:02222-1"
    },
    {
      "name": "libgepub",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.1-150600.3.5.1"
            }
          ]
        }
      ],
      "release": "leap 15.6",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "0.7.1-150600.3.5.1",
      "provider_record_id": "SUSE-SU-2025:02222-1"
    }
  ]
}

Publisher notes

[bookworm] libgepub: Minor issue

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[gir1.2-gepub-0.7]Unknown
Source package: [libgepub]
Details (2)
- 0.7.0-2 · amd64 · bookworm
  Affected
  dsa · libgepub · debian · bookworm; dsa · libgepub · debian · 12
- 0.7.0-2 · arm64 · bookworm
  Affected
  dsa · libgepub · debian · bookworm; dsa · libgepub · debian · 12
[libgepub-0.7-0]Unknown
Source package: [libgepub]
Details (2)
- 0.7.0-2 · amd64 · bookworm
  Affected
  dsa · libgepub · debian · bookworm; dsa · libgepub · debian · 12
- 0.7.0-2 · arm64 · bookworm
  Affected
  dsa · libgepub · debian · bookworm; dsa · libgepub · debian · 12
[libgepub-0.7-dev]Unknown
Source package: [libgepub]
Details (2)
- 0.7.0-2 · amd64 · bookworm
  Affected
  dsa · libgepub · debian · bookworm; dsa · libgepub · debian · 12
- 0.7.0-2 · arm64 · bookworm
  Affected
  dsa · libgepub · debian · bookworm; dsa · libgepub · debian · 12

[Debian 13 (Trixie)]

[gir1.2-gepub-0.7]Unknown
Source package: [libgepub]
Details (2)
- 0.7.3-1 · amd64 · trixie
  Fixed · Fixed: 0.7.3-1
  dsa · libgepub · debian · 13
- 0.7.3-1 · arm64 · trixie
  Fixed · Fixed: 0.7.3-1
  dsa · libgepub · debian · 13
[libgepub-0.7-0]Unknown
Source package: [libgepub]
Details (2)
- 0.7.3-1 · amd64 · trixie
  Fixed · Fixed: 0.7.3-1
  dsa · libgepub · debian · 13
- 0.7.3-1 · arm64 · trixie
  Fixed · Fixed: 0.7.3-1
  dsa · libgepub · debian · 13
[libgepub-0.7-dev]Unknown
Source package: [libgepub]
Details (2)
- 0.7.3-1 · amd64 · trixie
  Fixed · Fixed: 0.7.3-1
  dsa · libgepub · debian · 13
- 0.7.3-1 · arm64 · trixie
  Fixed · Fixed: 0.7.3-1
  dsa · libgepub · debian · 13

Observed: Oct 24, 2026, 9:52:39 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]