{"id":"CVE-2026-112036","aliases":["DEBIAN-CVE-2026-112036","EUVD-2026-104029","GHSA-pv37-v42r-g3rq","UBUNTU-CVE-2026-112036","openSUSE-SU-2026:12487-1"],"status":"published","title":"Artifex MuPDF Signature Locking pdf-xref.c free_char_list double free","description":"A vulnerability was detected in Artifex MuPDF up to 1.28.5. This impacts the function free_char_list of the file source/pdf/pdf-xref.c of the component Signature Locking. Performing a manipulation results in double free. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named 3984925b660afb8a781ddf504021e91be1bc671e. To fix this issue, it is recommended to deploy a patch.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00333,"percentile":0.26871,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119","CWE-415"],"published":"2026-10-19T00:45:12Z","modified":"2026-11-09T13:30:03Z","fixes":[{"ecosystem":"openSUSE:Tumbleweed","package":"mupdf","fixed_in":["1.28.6-2.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"mupdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.21.1+ds2-1","1.21.1+ds2-1+deb12u1","1.22.1+ds1-1","1.22.2+ds1-1","1.22.2+ds1-2","1.23.10+ds1-1","1.23.10+ds1-2","1.23.6+ds1-1","1.23.7+ds1-1","1.24.10+ds1-1","1.24.3+ds1-1","1.24.8+ds2-1","1.24.8+ds2-2","1.24.9+ds1-1","1.25.1+ds1-1","1.25.1+ds1-2","1.25.1+ds1-3","1.25.1+ds1-4","1.25.1+ds1-5","1.25.1+ds1-6","1.25.1+ds1-7","1.25.1+ds1-8","1.25.1+ds1-9","1.27.0+ds1-1","1.27.0+ds1-2","1.27.0+ds1-3","1.27.0+ds1-4","1.27.0+ds1-5","1.27.0+ds1-6","1.28.0+ds1-1","1.28.2+ds1-1","1.28.2+ds1-2"]},{"source":"osv","ecosystem":"Debian:13","package":"mupdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.25.1+ds1-6","1.25.1+ds1-6+deb13u1","1.25.1+ds1-7","1.25.1+ds1-8","1.25.1+ds1-9","1.27.0+ds1-1","1.27.0+ds1-2","1.27.0+ds1-3","1.27.0+ds1-4","1.27.0+ds1-5","1.27.0+ds1-6","1.28.0+ds1-1","1.28.2+ds1-1","1.28.2+ds1-2"]},{"source":"osv","ecosystem":"Debian:14","package":"mupdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.25.1+ds1-6","1.25.1+ds1-7","1.25.1+ds1-8","1.25.1+ds1-9","1.27.0+ds1-1","1.27.0+ds1-2","1.27.0+ds1-3","1.27.0+ds1-4","1.27.0+ds1-5","1.27.0+ds1-6","1.28.0+ds1-1","1.28.2+ds1-1","1.28.2+ds1-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"mupdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7-1","1.7a-1","1.7a-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"mupdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.11+ds1-1.1","1.11+ds1-2","1.12.0+ds1-1","1.12.0+ds1-1ubuntu0.1~esm1","1.12.0+ds1-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"mupdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.15.0+ds1-1","1.16.1+ds1-1ubuntu1","1.16.1+ds1-1ubuntu1+esm1","1.16.1+ds1-1ubuntu1+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"mupdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.17.0+ds1-2","1.19.0+ds1-1","1.19.0+ds1-1build1","1.19.0+ds1-2","1.19.0+ds1-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"mupdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22.2+ds1-2","1.22.2+ds1-2build1","1.23.6+ds1-1","1.23.7+ds1-1","1.23.10+ds1-1","1.23.10+ds1-1build1","1.23.10+ds1-1build2","1.23.10+ds1-1build3","1.23.10+ds1-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"mupdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.27.0+ds1-3ubuntu2","1.27.0+ds1-3ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"mupdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.25.1+ds1-7","1.25.1+ds1-7build1","1.25.1+ds1-7build2","1.27.0+ds1-2ubuntu1","1.27.0+ds1-3ubuntu1","1.27.0+ds1-3ubuntu2"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"mupdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28.6-2.1"}]}]}],"products":[{"vendor":"artifex","product":"mupdf"}],"references":[{"url":"https://vuldb.com/vuln/421684","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/421684/cti","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-112036","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/1008495","tags":["third-party-advisory"]},{"url":"https://bugs.ghostscript.com/show_bug.cgi?id=709768","tags":["issue-tracking","report"]},{"url":"https://bugs.ghostscript.com/attachment.cgi?id=28609","tags":["exploit"]},{"url":"http://www.ghostscript.com/cgi-bin/findgit.cgi?3984925b660afb8a781ddf504021e91be1bc671e","tags":["broken-link","patch"]},{"url":"https://artifex.com/","tags":["product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112036"},{"url":"https://artifex.com"},{"url":"https://github.com/advisories/GHSA-pv37-v42r-g3rq"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-112036","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-112036","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-112036","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-112036","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-112036","title":"Artifex MuPDF Signature Locking pdf-xref.c free_char_list double free","description":"A vulnerability was detected in Artifex MuPDF up to 1.28.5. This impacts the function free_char_list of the file source/pdf/pdf-xref.c of the component Signature Locking. Performing a manipulation results in double free. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named 3984925b660afb8a781ddf504021e91be1bc671e. To fix this issue, it is recommended to deploy a patch.","status":"published","published":"2026-10-19T00:45:12.234Z","modified":"2026-10-19T16:37:09.673Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium","assessor":"cna"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","level":"medium","assessor":"cna"},{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","level":"medium","assessor":"cna"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C","assessor":"cna"}],"cwes":["CWE-415","CWE-119"],"updated_at":"2026-11-02T13:44:40.64332Z"}],"euvd":[{"id":"EUVD-2026-104029","description":"A vulnerability was detected in Artifex MuPDF up to 1.28.5. This impacts the function free_char_list of the file source/pdf/pdf-xref.c of the component Signature Locking. Performing a manipulation results in double free. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named 3984925b660afb8a781ddf504021e91be1bc671e. To fix this issue, it is recommended to deploy a patch.","status":"published","published":"2026-10-19T00:45:12Z","modified":"2026-10-19T16:37:09Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium"}],"updated_at":"2026-11-02T16:59:50.835971Z"}],"ghsa":[{"id":"GHSA-pv37-v42r-g3rq","title":"A vulnerability was detected in Artifex MuPDF up to 1.28.5. This impacts the function...","description":"A vulnerability was detected in Artifex MuPDF up to 1.28.5. This impacts the function free_char_list of the file source/pdf/pdf-xref.c of the component Signature Locking. Performing a manipulation results in double free. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named 3984925b660afb8a781ddf504021e91be1bc671e. To fix this issue, it is recommended to deploy a patch.","status":"published","published":"2026-10-19T03:31:04Z","modified":"2026-10-19T03:31:05Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T15:13:56.45986Z"}],"nvd":[{"id":"CVE-2026-112036","description":"A vulnerability was detected in Artifex MuPDF up to 1.28.5. This impacts the function free_char_list of the file source/pdf/pdf-xref.c of the component Signature Locking. Performing a manipulation results in double free. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named 3984925b660afb8a781ddf504021e91be1bc671e. To fix this issue, it is recommended to deploy a patch.","status":"published","published":"2026-10-19T01:16:37.677Z","modified":"2026-10-19T17:17:08.75Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"secondary"}],"cwes":["CWE-119","CWE-415"],"updated_at":"2026-11-02T14:13:00.483792Z"}],"osv":[{"id":"DEBIAN-CVE-2026-112036","description":"A vulnerability was detected in Artifex MuPDF up to 1.28.5. This impacts the function free_char_list of the file source/pdf/pdf-xref.c of the component Signature Locking. Performing a manipulation results in double free. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named 3984925b660afb8a781ddf504021e91be1bc671e. To fix this issue, it is recommended to deploy a patch.","status":"published","published":"2026-10-19T01:16:37.677Z","modified":"2026-10-23T18:05:32.863509152Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low"}],"updated_at":"2026-11-02T15:45:49.824149Z"},{"id":"UBUNTU-CVE-2026-112036","description":"A vulnerability was detected in Artifex MuPDF up to 1.28.5. This impacts the function free_char_list of the file source/pdf/pdf-xref.c of the component Signature Locking. Performing a manipulation results in double free. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named 3984925b660afb8a781ddf504021e91be1bc671e. To fix this issue, it is recommended to deploy a patch.","status":"published","published":"2026-10-19T01:16:00Z","modified":"2026-10-28T20:15:43.221713417Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","level":"medium"},{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"low"}],"updated_at":"2026-11-02T16:55:59.591851Z"},{"id":"openSUSE-SU-2026:12487-1","title":"libmupdf28_6-1.28.6-2.1 on GA media","description":"These are all security issues fixed in the libmupdf28_6-1.28.6-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-11-08T00:00:00Z","modified":"2026-11-09T13:30:03.332343842Z","updated_at":"2026-11-09T14:01:18.614326Z"}]}}