{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2026-77420","title":"Title"},{"category":"description","text":"JLine is a Java library for handling console input. From 3.0.0 until 3.30.15 and 4.3.1, DefaultHistory.matchPatterns(String patterns, String line) in reader/src/main/java/org/jline/reader/impl/history/DefaultHistory.java converts the HISTORY_IGNORE configuration value into a Java regular expression while escaping only part of its syntax, allowing other regex metacharacters to reach the backtracking engine. An attacker who can control application or user configuration can supply a nested-quantifier expression that is reevaluated whenever a command is added to history, consuming excessive CPU and indefinitely blocking the reader thread. This issue is fixed in versions 3.30.15 and 4.3.1.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2026-77420","url":"https://www.suse.com/security/cve/CVE-2026-77420"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1282543 for CVE-2026-77420","url":"https://bugzilla.suse.com/1282543"}],"title":"SUSE CVE CVE-2026-77420","tracking":{"current_release_date":"2026-09-24T16:28:18Z","generator":{"date":"2026-09-24T16:28:18Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2026-77420","initial_release_date":"2026-09-24T16:28:18Z","revision_history":[{"date":"2026-09-24T16:28:18Z","number":"2","summary":"vulnerabilities added,references added,severity changed from  to moderate"}],"status":"interim","version":"2"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"SUSE Linux Enterprise Server 16.0","product":{"name":"SUSE Linux Enterprise Server 16.0","product_id":"SUSE Linux Enterprise Server 16.0","product_identification_helper":{"cpe":"cpe:/o:suse:sles:16:16.0:server"}}},{"category":"product_name","name":"SUSE Linux Enterprise Server 16.1","product":{"name":"SUSE Linux Enterprise Server 16.1","product_id":"SUSE Linux Enterprise Server 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16.0"}]},"vulnerabilities":[{"cve":"CVE-2026-77420","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2026-77420"}],"notes":[{"category":"general","text":"JLine is a Java library for handling console input. From 3.0.0 until 3.30.15 and 4.3.1, DefaultHistory.matchPatterns(String patterns, String line) in reader/src/main/java/org/jline/reader/impl/history/DefaultHistory.java converts the HISTORY_IGNORE configuration value into a Java regular expression while escaping only part of its syntax, allowing other regex metacharacters to reach the backtracking engine. An attacker who can control application or user configuration can supply a nested-quantifier expression that is reevaluated whenever a command is added to history, consuming excessive CPU and indefinitely blocking the reader thread. This issue is fixed in versions 3.30.15 and 4.3.1.","title":"CVE description"}],"product_status":{"known_affected":["SUSE Linux Enterprise Server 16.0:jline3","SUSE Linux Enterprise Server 16.0:jline3-builtins","SUSE Linux Enterprise Server 16.0:jline3-console","SUSE Linux Enterprise Server 16.0:jline3-console-ui","SUSE Linux Enterprise Server 16.0:jline3-curses","SUSE Linux Enterprise Server 16.0:jline3-jansi","SUSE Linux Enterprise Server 16.0:jline3-jansi-core","SUSE Linux Enterprise Server 16.0:jline3-javadoc","SUSE Linux Enterprise Server 16.0:jline3-native","SUSE Linux Enterprise Server 16.0:jline3-parent","SUSE Linux Enterprise Server 16.0:jline3-reader","SUSE Linux Enterprise Server 16.0:jline3-remote-telnet","SUSE Linux Enterprise Server 16.0:jline3-style","SUSE Linux Enterprise Server 16.0:jline3-terminal","SUSE Linux Enterprise Server 16.0:jline3-terminal-jansi","SUSE Linux Enterprise Server 16.0:jline3-terminal-jna","SUSE Linux Enterprise Server 16.0:jline3-terminal-jni","SUSE Linux Enterprise Server 16.1:jline3","SUSE Linux Enterprise Server 16.1:jline3-builtins","SUSE Linux Enterprise Server 16.1:jline3-console","SUSE Linux Enterprise Server 16.1:jline3-console-ui","SUSE Linux Enterprise Server 16.1:jline3-curses","SUSE Linux Enterprise Server 16.1:jline3-jansi","SUSE Linux Enterprise Server 16.1:jline3-jansi-core","SUSE Linux Enterprise Server 16.1:jline3-javadoc","SUSE Linux Enterprise Server 16.1:jline3-native","SUSE Linux Enterprise Server 16.1:jline3-reader","SUSE Linux Enterprise Server 16.1:jline3-remote-telnet","SUSE Linux Enterprise Server 16.1:jline3-style","SUSE Linux Enterprise Server 16.1:jline3-terminal","SUSE Linux Enterprise Server 16.1:jline3-terminal-jansi","SUSE Linux Enterprise Server 16.1:jline3-terminal-jna","SUSE Linux Enterprise Server 16.1:jline3-terminal-jni","SUSE Linux Enterprise Server for SAP applications 16.0:jline3","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-builtins","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-console","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-console-ui","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-curses","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-jansi","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-jansi-core","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-javadoc","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-native","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-parent","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-reader","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-remote-telnet","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-style","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-terminal","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-terminal-jansi","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-terminal-jna","SUSE Linux Enterprise Server for SAP applications 16.0:jline3-terminal-jni","SUSE Linux Enterprise Server for SAP applications 16.1:jline3","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-builtins","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-console","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-console-ui","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-curses","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-jansi","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-jansi-core","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-javadoc","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-native","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-reader","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-remote-telnet","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-style","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-terminal","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-terminal-jansi","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-terminal-jna","SUSE Linux Enterprise Server for SAP applications 16.1:jline3-terminal-jni","openSUSE Leap 16.0:jline3"]},"references":[{"category":"external","summary":"CVE-2026-77420","url":"https://www.suse.com/security/cve/CVE-2026-77420"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1282543 for CVE-2026-77420","url":"https://bugzilla.suse.com/1282543"}],"threats":[{"category":"impact","date":"2026-09-23T20:11:05Z","details":"moderate"}],"title":"CVE-2026-77420"}]}