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UBUNTU-CVE-2026-46529 (CVE-2026-46529)

Vulnerability from osv_ubuntu – Published: 2026-05-20 00:00 – Updated: 2026-06-30 16:22 – Source website
VLAI
Details

Atril Document Viewer is the default document reader of the MATE desktop environment for Linux. A single-click remote code execution vulnerability in versions prior to 1.26.3 and 1.28.4 allows an attacker to achieve arbitrary code execution as the user by tricking them into clicking a link inside a malicious PDF document. The PDF can be packaged as a polyglot file that is simultaneously a valid PDF and a valid ELF shared library, making the attack a single-file, single-click, configuration-independent RCE on stock atril installations. The root cause is shell/ev-application.c:ev_spawn, which builds a command line from attacker-controlled PDF link-destination fields without applying g_shell_quote. The cmdline is then handed to g_app_info_create_from_commandline, which shell-parses it back into argv — splitting any embedded --gtk-module=PATH into a separate argv element. GTK then dlopen()s the path during init, running any __attribute__((constructor)) it finds. Versions 1.26.3 and 1.28.4 contain a patch for the issue. This is the same defect class as CVE-2023-51698 (CBT --checkpoint-action injection in comics-document.c, fixed in 1.6.2) but in a different code path (shell/ev-application.c) that the original patch did not touch.

Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

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          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.26.2-5",
        "1.28.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "evince",
            "binary_version": "49~alpha-2ubuntu2.1"
          },
          {
            "binary_name": "evince-common",
            "binary_version": "49~alpha-2ubuntu2.1"
          },
          {
            "binary_name": "gir1.2-evince-4.0",
            "binary_version": "49~alpha-2ubuntu2.1"
          },
          {
            "binary_name": "libevdocument-4.0-6",
            "binary_version": "49~alpha-2ubuntu2.1"
          },
          {
            "binary_name": "libevview-4.0-5",
            "binary_version": "49~alpha-2ubuntu2.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "evince",
        "purl": "pkg:deb/ubuntu/evince@49~alpha-2ubuntu2.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "49~alpha-2ubuntu2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "48.1-3ubuntu2",
        "49~alpha-2",
        "49~alpha-2ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gir1.2-evince-3.0",
            "binary_version": "48.1+dfsg-1build1"
          },
          {
            "binary_name": "libevdocument3-4t64",
            "binary_version": "48.1+dfsg-1build1"
          },
          {
            "binary_name": "libevview3-3t64",
            "binary_version": "48.1+dfsg-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "evince-gtk3",
        "purl": "pkg:deb/ubuntu/evince-gtk3@48.1+dfsg-1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "48.1+dfsg-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "gir1.2-papers-4.0",
            "binary_version": "50.1-0ubuntu1.1"
          },
          {
            "binary_name": "libppsdocument-4.0-6",
            "binary_version": "50.1-0ubuntu1.1"
          },
          {
            "binary_name": "libppsview-4.0-5",
            "binary_version": "50.1-0ubuntu1.1"
          },
          {
            "binary_name": "papers",
            "binary_version": "50.1-0ubuntu1.1"
          },
          {
            "binary_name": "papers-common",
            "binary_version": "50.1-0ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "papers",
        "purl": "pkg:deb/ubuntu/papers@50.1-0ubuntu1.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "50.1-0ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "48.0-1ubuntu1",
        "49.1-1ubuntu1",
        "49.2-1ubuntu1",
        "49.2-3ubuntu1",
        "50~beta-0ubuntu2",
        "50.0-0ubuntu1",
        "50.0-0ubuntu2",
        "50.1-0ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "Atril Document Viewer is the default document reader of the MATE desktop environment for Linux. A single-click remote code execution vulnerability in versions prior to 1.26.3 and 1.28.4 allows an attacker to achieve arbitrary code execution as the user by tricking them into clicking a link inside a malicious PDF document. The PDF can be packaged as a polyglot file that is simultaneously a valid PDF and a valid ELF shared library, making the attack a single-file, single-click, configuration-independent RCE on stock atril installations. The root cause is `shell/ev-application.c:ev_spawn`, which builds a command line from attacker-controlled PDF link-destination fields without applying `g_shell_quote`. The cmdline is then handed to `g_app_info_create_from_commandline`, which shell-parses it back into argv \u2014 splitting any embedded `--gtk-module=PATH` into a separate argv element. GTK then `dlopen()`s the path during init, running any `__attribute__((constructor))` it finds. Versions 1.26.3 and 1.28.4 contain a patch for the issue. This is the same defect class as CVE-2023-51698 (CBT `--checkpoint-action` injection in `comics-document.c`, fixed in 1.6.2) but in a different code path (`shell/ev-application.c`) that the original patch did not touch.",
  "id": "UBUNTU-CVE-2026-46529",
  "modified": "2026-06-30T16:22:50Z",
  "published": "2026-05-20T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-46529"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46529"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2026/05/19/34"
    },
    {
      "type": "REPORT",
      "url": "https://medeiros.zip/posts/CVE-2026-46529-evince"
    },
    {
      "type": "REPORT",
      "url": "https://blogs.gnome.org/mcatanzaro/2026/05/21/single-click-code-execution-exploit-for-evince-atril-and-xreader/"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8295-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8321-1"
    }
  ],
  "related": [
    "USN-8295-1",
    "USN-8321-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-46529"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.