{"id":28122,"date":"2026-09-24T04:31:44","date_gmt":"2026-09-23T20:31:44","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-77420"},"modified":"2026-09-24T04:31:44","modified_gmt":"2026-09-23T20:31:44","slug":"cve-2026-77420","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-77420","title":{"rendered":"CVE-2026-77420 [MEDIUM] &#8211; JLine is a Java library for handling console input. From 3.0.0 until 3.30.15 and 4.3.1, De"},"content":{"rendered":"<p>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.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>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<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-28122","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/28122","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}