{"id":"CVE-2026-107735","summary":"SumatraPDF: `sumatrapdfrestrict.ini` never revokes any permission (fail-open policy initialization)","details":"SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, InitializePolicies() starts the sumatrapdfrestrict.ini path with gPolicyRestrictions set to Perm::All and only ORs permission bits, so the INI file never revokes permissions. Deploying SumatraPDF with this INI file, including a malformed file or zero-valued permission settings, can silently bypass configured disk, network, printing, registry, clipboard, preference, and fullscreen restrictions. The -restrict command-line path works correctly and is not affected. No fixed version is available as of this review.","aliases":["GHSA-crhm-w5qr-wjj4"],"modified":"2026-10-11T07:05:48.704015341Z","published":"2026-10-08T22:26:00.405Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-636"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107735.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107735.json"},{"type":"ADVISORY","url":"https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-crhm-w5qr-wjj4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107735"},{"type":"FIX","url":"https://github.com/sumatrapdfreader/sumatrapdf/commit/f72948b59405d3ddba527789898050ef411d0bb8"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/sumatrapdfreader/sumatrapdf","events":[{"introduced":"0"},{"fixed":"f72948b59405d3ddba527789898050ef411d0bb8"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"last_affected":"3.6.1"}]}}],"versions":["3.2","3.1.2rel","3.0split","2.5split","2.4split","2.3split","2.2split","2.1split","2.0split","1.9split","1.8split","1.7split","1.6split","1.5split","1.4split"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107735.json","vanir_signatures":[{"id":"CVE-2026-107735-60b20e45","signature_type":"Line","signature_version":"v1","source":"https://github.com/sumatrapdfreader/sumatrapdf/commit/f72948b59405d3ddba527789898050ef411d0bb8","target":{"file":"src/SumatraPDF.cpp"},"deprecated":false,"digest":{"line_hashes":["49845272362093108099045878523602481506","144121150308195193877812671284653896949","60213038697516159132125837730007100430","44411479439365287873980735074669871004"],"threshold":0.9}}],"vanir_signatures_modified":"2026-10-11T07:05:48Z"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}