An out-of-bounds read vulnerability was discovered in the PCRE2 library in the compile_xclass_matchingpath() function of the pcre2_jit_compile.c file. This involves a unicode property matching issue in JIT-compiled regular expressions. The issue occurs because the character was not fully read in case-less matching within JIT.
Cite this page
CVE-2022-1586. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2022-1586
Use CWE-125, Pcre vendor hub and Pcre2 product page to widen CVE-2022-1586 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2017-8786, CVE-2017-8399 and CVE-2015-3210 for nearby disclosures in the same product family.