{"id":"CVE-2026-13006","aliases":["DEBIAN-CVE-2026-13006","EUVD-2026-38691","GHSA-567r-vvh5-jjr8","UBUNTU-CVE-2026-13006","openSUSE-SU-2026:11135-1"],"status":"published","title":"Incomplete protection against CVE-2025-11226","description":"ACE vulnerability in conditional configuration file processing  by QOS.CH logback-core up to and including version 1.5.36 in Java applications, allows an attacker to execute arbitrary code circumventing existing protections against CVE-2025-11226 by compromising an existing logback configuration file or by injecting an environment variable before program execution.\n\n\n\nA successful attack requires the presence of Janino library to be present on the user's class path. In addition, the attacker must  have write access to a \nconfiguration file. Alternatively, the attacker could inject a malicious \nenvironment variable pointing to a malicious configuration file. In both \ncases, the attack requires existing privilege.\n\nPlease note that in logack version 1.5.37 conditional processing using Janino was removed.","severity":{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/S:P/AU:N/RE:M/U:Green","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00175,"percentile":0.07054,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2026-06-24T05:41:32Z","modified":"2026-10-26T12:02:34Z","fixes":[{"ecosystem":"Debian:14","package":"logback","fixed_in":["1:1.6.3-1"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"logback","fixed_in":["1.5.36-1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.2.11-3","1:1.2.11-4","1:1.2.11-5","1:1.2.11-6","1:1.6.3-1","1:1.6.3-2","1:1.6.3-3"]},{"source":"osv","ecosystem":"Debian:13","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.2.11-6","1:1.6.3-1","1:1.6.3-2","1:1.6.3-3"]},{"source":"osv","ecosystem":"Debian:14","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.6.3-1"}]}],"versions":["1:1.2.11-6"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.1.3-2","1:1.1.3-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.1.9-4","1:1.1.9-5","1:1.2.3-2","1:1.2.3-2ubuntu1~18.04.1","1:1.2.3-2ubuntu1~18.04.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.2.3-5","1:1.2.3-5ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.2.3-6","1:1.2.7-1","1:1.2.8-1","1:1.2.9-1","1:1.2.10-1","1:1.2.10-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.2.11-3","1:1.2.11-4","1:1.2.11-5"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.2.11-6"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.2.11-6build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.2.11-6","1:1.2.11-6build1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"logback","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.36-1.1"}]}]}],"products":[{"vendor":"qos.ch sarl","product":"logback-core"}],"references":[{"url":"https://logback.qos.ch/news.html#1.5.37"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-13006"},{"url":"https://logback.qos.ch/news.html#1.5.35","tags":["report"]},{"url":"https://logback.qos.ch/news.html#1.5.36"},{"url":"https://github.com/advisories/GHSA-567r-vvh5-jjr8"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-13006","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-13006","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-13006","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-13006","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-13006","title":"Incomplete protection against CVE-2025-11226","description":"ACE vulnerability in conditional configuration file processing  by QOS.CH logback-core up to and including version 1.5.36 in Java applications, allows an attacker to execute arbitrary code circumventing existing protections against CVE-2025-11226 by compromising an existing logback configuration file or by injecting an environment variable before program execution.\n\n\n\nA successful attack requires the presence of Janino library to be present on the user's class path. In addition, the attacker must  have write access to a \nconfiguration file. Alternatively, the attacker could inject a malicious \nenvironment variable pointing to a malicious configuration file. In both \ncases, the attack requires existing privilege.\n\nPlease note that in logack version 1.5.37 conditional processing using Janino was removed.","status":"published","published":"2026-06-24T05:41:32.197Z","modified":"2026-07-01T11:05:37.718Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/S:P/AU:N/RE:M/U:Green","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:19:50.24628Z"}],"euvd":[{"id":"EUVD-2026-38691","description":"ACE vulnerability in conditional configuration file processing  by QOS.CH logback-core up to and including version 1.5.36 in Java applications, allows an attacker to execute arbitrary code circumventing existing protections against CVE-2025-11226 by compromising an existing logback configuration file or by injecting an environment variable before program execution.\n\n\n\nA successful attack requires the presence of Janino library to be present on the user's class path. In addition, the attacker must  have write access to a \nconfiguration file. Alternatively, the attacker could inject a malicious \nenvironment variable pointing to a malicious configuration file. In both \ncases, the attack requires existing privilege.\n\nPlease note that in logack version 1.5.37 conditional processing using Janino was removed.","status":"published","published":"2026-06-24T05:41:32Z","modified":"2026-07-01T11:05:37Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/S:P/AU:N/RE:M/U:Green","level":"high"}],"updated_at":"2026-11-02T18:20:20.762369Z"}],"ghsa":[{"id":"GHSA-567r-vvh5-jjr8","title":"ACE vulnerability in conditional configuration file processing  by QOS.CH logback-core up to and...","description":"ACE vulnerability in conditional configuration file processing  by QOS.CH logback-core up to and including version 1.5.34 in Java applications, allows an attacker to execute arbitrary code circumventing existing protections against CVE-2025-11226 by compromising an existing logback configuration file or by injecting an environment variable before program execution.\n\n\n\nA successful attack requires the presence of Janino library to be present on the user's class path. In addition, the attacker must  have write access to a \nconfiguration file. Alternatively, the attacker could inject a malicious \nenvironment variable pointing to a malicious configuration file. In both \ncases, the attack requires existing privilege.","status":"published","published":"2026-06-24T09:30:45Z","modified":"2026-06-26T15:33:15Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/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:P/AU:N/R:X/V:X/RE:M/U:Green","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:09:01.181648Z"}],"nvd":[{"id":"CVE-2026-13006","description":"ACE vulnerability in conditional configuration file processing  by QOS.CH logback-core up to and including version 1.5.36 in Java applications, allows an attacker to execute arbitrary code circumventing existing protections against CVE-2025-11226 by compromising an existing logback configuration file or by injecting an environment variable before program execution.\n\n\n\nA successful attack requires the presence of Janino library to be present on the user's class path. In addition, the attacker must  have write access to a \nconfiguration file. Alternatively, the attacker could inject a malicious \nenvironment variable pointing to a malicious configuration file. In both \ncases, the attack requires existing privilege.\n\nPlease note that in logack version 1.5.37 conditional processing using Janino was removed.","status":"published","published":"2026-06-24T07:16:27.127Z","modified":"2026-10-25T23:10:00.167Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/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:P/AU:N/R:X/V:X/RE:M/U:Green","level":"high","assessor":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:12:25.288279Z"}],"osv":[{"id":"DEBIAN-CVE-2026-13006","description":"ACE vulnerability in conditional configuration file processing  by QOS.CH logback-core up to and including version 1.5.36 in Java applications, allows an attacker to execute arbitrary code circumventing existing protections against CVE-2025-11226 by compromising an existing logback configuration file or by injecting an environment variable before program execution.    A successful attack requires the presence of Janino library to be present on the user's class path. In addition, the attacker must  have write access to a  configuration file. Alternatively, the attacker could inject a malicious  environment variable pointing to a malicious configuration file. In both  cases, the attack requires existing privilege.  Please note that in logack version 1.5.37 conditional processing using Janino was removed.","status":"published","published":"2026-06-24T07:16:27.127Z","modified":"2026-10-26T12:02:34.413503564Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/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:P/AU:N/R:X/V:X/RE:M/U:Green","level":"high"}],"updated_at":"2026-11-02T15:45:51.374409Z"},{"id":"UBUNTU-CVE-2026-13006","description":"ACE vulnerability in conditional configuration file processing  by QOS.CH logback-core up to and including version 1.5.36 in Java applications, allows an attacker to execute arbitrary code circumventing existing protections against CVE-2025-11226 by compromising an existing logback configuration file or by injecting an environment variable before program execution. A successful attack requires the presence of Janino library to be present on the user's class path. In addition, the attacker must  have write access to a configuration file. Alternatively, the attacker could inject a malicious environment variable pointing to a malicious configuration file. In both cases, the attack requires existing privilege. Please note that in logack version 1.5.37 conditional processing using Janino was removed.","status":"published","published":"2026-06-24T07:16:00Z","modified":"2026-10-17T12:58:45.488589579Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/S:P/AU:N/RE:M/U:Green","level":"high"}],"updated_at":"2026-11-02T16:56:00.592716Z"},{"id":"openSUSE-SU-2026:11135-1","title":"logback-1.5.36-1.1 on GA media","description":"These are all security issues fixed in the logback-1.5.36-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-06-27T00:00:00Z","modified":"2026-06-29T09:45:07.009094103Z","updated_at":"2026-11-02T16:58:38.95195Z"}]}}