{"id":"CVE-2026-111269","aliases":["AZL-108293","BELL-CVE-2026-111269","DEBIAN-CVE-2026-111269","EUVD-2026-102524","GHSA-qvfg-9jj8-868q","MGASA-2026-0553","OESA-2026-4550","OESA-2026-4551","OESA-2026-4552","OESA-2026-4553","UBUNTU-CVE-2026-111269"],"status":"published","title":"libical through 4.0.6 Heap Out-of-Bounds Read via icalvalue_decode_ical_string","description":"libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00244,"percentile":0.15747,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2026-10-15T21:43:16Z","modified":"2026-11-07T14:18:24Z","fixes":[{"ecosystem":"Azure Linux:3","package":"libical","fixed_in":["3.0.10-3"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP3","package":"libical","fixed_in":["3.0.17-4.oe2403sp3"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP4","package":"libical","fixed_in":["3.0.17-4.oe2403sp4"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP4","package":"libical","fixed_in":["3.0.11-4.oe2203sp4"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP1","package":"libical","fixed_in":["3.0.17-4.oe2403sp1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"libical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.10-3"}]}]},{"source":"osv","ecosystem":"Alpaquita:23","package":"libical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.16-r1"}]}]},{"source":"osv","ecosystem":"Alpaquita:25","package":"libical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.20-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"libical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.14-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"libical3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.16-1","3.0.17-1","3.0.17-1.1","3.0.17-1.1~exp1","3.0.18-1","3.0.19-1","3.0.19-2","3.0.19-3","3.0.19-4","3.0.20-1","3.0.20-2","3.0.20-3"]},{"source":"osv","ecosystem":"Debian:13","package":"libical3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.20-1","3.0.20-2","3.0.20-3"]},{"source":"osv","ecosystem":"Debian:14","package":"libical3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.20-1","3.0.20-2","3.0.20-3"]},{"source":"osv","ecosystem":"Mageia:10","package":"libical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.20-2.1.mga10"}]}],"bundled":2},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP3","package":"libical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.17-4.oe2403sp3"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP4","package":"libical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.17-4.oe2403sp4"}]}]},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP4","package":"libical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.11-4.oe2203sp4"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP1","package":"libical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.17-4.oe2403sp1"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.1-0ubuntu1","1.0.1-0ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"libical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0-0.5","2.0.0-0.5build1","2.0.0-1ubuntu1","2.0.0-4"]}],"products":[{"vendor":"libical","product":"libical"}],"references":[{"url":"https://hackmd.io/@haind-pwn/libical-icalvalue-decode-ical-string-oob-read","tags":["technical-description","exploit","article","report"]},{"url":"https://github.com/libical/libical/pull/1455","tags":["patch","issue-tracking","fix","report"]},{"url":"https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de","tags":["patch","fix","report"]},{"url":"https://github.com/libical/libical/blob/9cfca65c122fa23b9680a28e0c9225a2fd015fc5/src/libical/icalvalue.c#L1608-L1645","tags":["technical-description","article","report"]},{"url":"https://github.com/libical/libical","tags":["product","package","report"]},{"url":"https://www.vulncheck.com/advisories/libical-through-4.0.6-heap-out-of-bounds-read-via-icalvalue-decode-ical-string","tags":["third-party-advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111269","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-qvfg-9jj8-868q"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-111269","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111269.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-111269","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2026-0553.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=36475","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IS2XULHAXRU4HV4TBL2ALZSHAFHMXM5Y/","tags":["web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2540947","tags":["report"]},{"url":"https://github.com/libical/libical/issues/1361","tags":["report"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4550","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4551","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4552","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4553","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-111269","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-111269","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-111269","title":"libical through 4.0.6 Heap Out-of-Bounds Read via icalvalue_decode_ical_string","description":"libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.","status":"published","published":"2026-10-15T21:43:16.966Z","modified":"2026-10-26T14:15:58.734Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:20:15.712761Z"}],"euvd":[{"id":"EUVD-2026-102524","description":"libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.","status":"published","published":"2026-10-15T21:43:16Z","modified":"2026-10-26T14:15:58Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:59:29.915597Z"}],"ghsa":[{"id":"GHSA-qvfg-9jj8-868q","title":"libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string()...","description":"libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.","status":"published","published":"2026-10-16T00:31:54Z","modified":"2026-10-16T00:32:02Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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":"medium"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:13:49.895192Z"}],"nvd":[{"id":"CVE-2026-111269","description":"libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.","status":"published","published":"2026-10-15T22:19:27.68Z","modified":"2026-10-26T15:16:37.927Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:59.751798Z"}],"osv":[{"id":"BELL-CVE-2026-111269","status":"published","published":"2026-10-17T06:05:36.724287Z","modified":"2026-10-21T07:15:02.42165568Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:28:23.037038Z"},{"id":"CVE-2026-111269","title":"libical through 4.0.6 Heap Out-of-Bounds Read via icalvalue_decode_ical_string","description":"libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.","status":"published","published":"2026-10-15T21:43:16.966Z","modified":"2026-10-28T10:51:19.576950352Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:44:55.61515Z"},{"id":"DEBIAN-CVE-2026-111269","description":"libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.","status":"published","published":"2026-10-15T22:19:27.68Z","modified":"2026-10-27T10:00:41.417736673Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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":"medium"}],"updated_at":"2026-11-02T15:45:49.824149Z"},{"id":"OESA-2026-4550","title":"libical security update","description":"Libical is an open source implementation of the IETF\u0026amp;apos;s iCalendar calendaring and scheduling protocols (RFC 2445, 2446, and 2447). It parses iCal components and provides a C API for manipulating the component properties, parameters, and subcomponents.\r\n\r\nSecurity Fix(es):\n\nlibical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.(CVE-2026-111269)","status":"published","published":"2026-10-29T09:02:50Z","modified":"2026-10-29T09:15:26.046433623Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:47.981622Z"},{"id":"OESA-2026-4551","title":"libical security update","description":"Libical is an open source implementation of the IETF\u0026amp;apos;s iCalendar calendaring and scheduling protocols (RFC 2445, 2446, and 2447). It parses iCal components and provides a C API for manipulating the component properties, parameters, and subcomponents.\r\n\r\nSecurity Fix(es):\n\nlibical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.(CVE-2026-111269)","status":"published","published":"2026-10-29T09:02:50Z","modified":"2026-10-29T09:15:26.047714158Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:47.981622Z"},{"id":"OESA-2026-4552","title":"libical security update","description":"Libical is an open source implementation of the IETF\u0026amp;apos;s iCalendar calendaring and scheduling protocols (RFC 2445, 2446, and 2447). It parses iCal components and provides a C API for manipulating the component properties, parameters, and subcomponents.\r\n\r\nSecurity Fix(es):\n\nlibical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.(CVE-2026-111269)","status":"published","published":"2026-10-29T09:02:51Z","modified":"2026-10-29T09:15:26.661200481Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:47.981622Z"},{"id":"OESA-2026-4553","title":"libical security update","description":"Libical is an open source implementation of the IETF\u0026amp;apos;s iCalendar calendaring and scheduling protocols (RFC 2445, 2446, and 2447). It parses iCal components and provides a C API for manipulating the component properties, parameters, and subcomponents.\r\n\r\nSecurity Fix(es):\n\nlibical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.(CVE-2026-111269)","status":"published","published":"2026-10-29T09:02:52Z","modified":"2026-10-29T09:15:27.864447267Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:47.981622Z"},{"id":"UBUNTU-CVE-2026-111269","description":"libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.","status":"published","published":"2026-10-15T22:19:00Z","modified":"2026-10-28T17:50:35Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"},{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:55:59.591851Z"},{"id":"AZL-108293","title":"CVE-2026-111269 affecting package libical for versions less than 3.0.10-3","description":"libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.","status":"published","published":"2026-10-15T22:19:27Z","modified":"2026-11-07T14:18:24.010955809Z","updated_at":"2026-11-07T14:48:11.583685Z"},{"id":"MGASA-2026-0553","title":"Updated libical package fixes security vulnerabilities","description":"Denial of Service via crafted iCalendar property parsing.\n(CVE-2026-88383)\nHeap Out-of-Bounds Read via icalvalue_decode_ical_string.\n(CVE-2026-111269)\n","status":"published","published":"2026-10-27T04:31:25Z","modified":"2026-10-27T04:58:07.444835089Z","updated_at":"2026-11-02T15:49:43.795591Z"}]}}