{"id":"CVE-2026-46529","state":"PUBLISHED","title":"PDF /GoToR action argv injection enables single-click RCE via --gtk-module dlopen","description":"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.","publishedAt":"2026-06-10T19:46:23.639Z","updatedAt":"2026-07-28T12:04:47.485Z","severity":{"score":8.4,"label":"High","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["mate-desktop atril"],"affected":[{"vendor":"mate-desktop","product":"atril","versions":[{"version":"< 1.26.3","status":"affected"},{"version":">= 1.27.0, < 1.28.4","status":"affected"}]}],"references":["https://github.com/mate-desktop/atril/security/advisories/GHSA-vgv2-m826-8f6f","https://github.com/mate-desktop/atril/releases/tag/v1.26.3","https://github.com/mate-desktop/atril/releases/tag/v1.28.4","http://www.openwall.com/lists/oss-security/2026/05/19/34","http://www.openwall.com/lists/oss-security/2026/05/21/7","http://www.openwall.com/lists/oss-security/2026/05/22/11","https://lists.debian.org/debian-lts-announce/2026/05/msg00041.html","https://lists.debian.org/debian-lts-announce/2026/05/msg00042.html","https://lists.debian.org/debian-lts-announce/2026/06/msg00021.html","https://access.redhat.com/security/cve/CVE-2026-46529","https://bugzilla.redhat.com/show_bug.cgi?id=2487669","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46529.json","https://access.redhat.com/errata/RHSA-2026:41904","https://access.redhat.com/errata/RHSA-2026:28998","https://access.redhat.com/errata/RHSA-2026:43398","https://access.redhat.com/errata/RHSA-2026:46467","https://access.redhat.com/errata/RHSA-2026:42692","https://access.redhat.com/errata/RHSA-2026:39115","https://access.redhat.com/errata/RHSA-2026:33416","https://access.redhat.com/errata/RHSA-2026:33169","https://access.redhat.com/errata/RHSA-2026:27819"],"weaknesses":["CWE-77","CWE-88","CWE-829"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46529.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46529","state":"PUBLISHED","datePublished":"2026-06-10T19:46:23.639Z","dateUpdated":"2026-07-28T12:04:47.485Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-14T19:12:32.756Z"},"containers":{"cna":{"title":"PDF /GoToR action argv injection enables single-click RCE via --gtk-module dlopen","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"mate-desktop","product":"atril","versions":[{"version":"< 1.26.3","status":"affected"},{"version":">= 1.27.0, < 1.28.4","status":"affected"}]}],"references":[{"url":"https://github.com/mate-desktop/atril/security/advisories/GHSA-vgv2-m826-8f6f","name":"https://github.com/mate-desktop/atril/security/advisories/GHSA-vgv2-m826-8f6f","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/mate-desktop/atril/releases/tag/v1.26.3","name":"https://github.com/mate-desktop/atril/releases/tag/v1.26.3","tags":["x_refsource_MISC"]},{"url":"https://github.com/mate-desktop/atril/releases/tag/v1.28.4","name":"https://github.com/mate-desktop/atril/releases/tag/v1.28.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.4,"baseSeverity":"HIGH","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-77","lang":"en","description":"CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-88","lang":"en","description":"CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-829","lang":"en","description":"CWE-829: Inclusion of Functionality from Untrusted Control Sphere","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-10T19:46:23.639Z"},"source":{"advisory":"GHSA-vgv2-m826-8f6f","discovery":"UNKNOWN"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/05/19/34"},{"url":"http://www.openwall.com/lists/oss-security/2026/05/21/7"},{"url":"http://www.openwall.com/lists/oss-security/2026/05/22/11"},{"url":"https://lists.debian.org/debian-lts-announce/2026/05/msg00041.html"},{"url":"https://lists.debian.org/debian-lts-announce/2026/05/msg00042.html"},{"url":"https://lists.debian.org/debian-lts-announce/2026/06/msg00021.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-06-16T22:38:17.493Z"}},{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/mate-desktop/atril/security/advisories/GHSA-vgv2-m826-8f6f","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-12T12:30:30.338432Z","id":"CVE-2026-46529","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-12T12:30:51.506Z"}},{"title":"atril: evince: xreader: PDF /GoToR action argv injection enables single-click RCE via --gtk-module dlopen","descriptions":[{"lang":"en","value":"A flaw was found in Atril, Evince and Xreader. A malicious link inside a specially crafted PDF document can cause arbitrary code execution when clicked due to improper quoting of attacker-controlled PDF link-destination fields during remote go-to (/GoToR) actions. This issue allows an attacker to execute arbitrary code with the privileges of the user that clicked on the embedded link."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7 Extended Lifecycle Support","packageName":"evince","defaultStatus":"affected","versions":[{"version":"0:3.28.2-11.el7_9","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:rhel_els:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","packageName":"evince","defaultStatus":"affected","versions":[{"version":"0:3.28.4-17.el8_10","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update 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vulnerability, do not click on links inside PDF documents from untrusted or unverified sources."}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"}}]}}}