{"id":"CVE-2019-20454","details":"An out-of-bounds read was discovered in PCRE before 10.34 when the pattern \\X is JIT compiled and used to match specially crafted subjects in non-UTF mode. Applications that use PCRE to parse untrusted input may be vulnerable to this flaw, which would allow an attacker to crash the application. The flaw occurs in do_extuni_no_utf in pcre2_jit_compile.c.","modified":"2026-04-16T04:36:04.415191326Z","published":"2020-02-14T14:15:10.593Z","related":["ALSA-2020:3662","ALSA-2020:4539","SUSE-SU-2022:2649-1","openSUSE-SU-2022:2649-1"],"references":[{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202006-16"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2023/03/msg00014.html"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/"},{"type":"REPORT","url":"https://bugs.exim.org/show_bug.cgi?id=2421"},{"type":"REPORT","url":"https://bugs.php.net/bug.php?id=78338"},{"type":"FIX","url":"https://vcs.pcre.org/pcre2?view=revision&revision=1092"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1735494"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pcre2project/pcre2","events":[{"introduced":"e296b92d5a082e4365c93e211db6b872eeb7fad8"},{"fixed":"031c07cc61696b69038ccfd61ebb90c50d8e3357"}],"database_specific":{"versions":[{"introduced":"10.31"},{"fixed":"10.34"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20454.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"31"}]},{"events":[{"introduced":"8.2.0"},{"fixed":"8.2.12"}]},{"events":[{"introduced":"9.0.0"},{"fixed":"9.0.6"}]},{"events":[{"introduced":"0"},{"last_affected":"9.1.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}