pcre_jit_compile.c in PCRE 8.35 does not properly use table jumps to optimize nested alternatives, which allows remote attackers to cause a denial of service (stack memory corruption) or possibly have unspecified other impact via a crafted string, as demonstrated by packets encountered by Suricata during use of a regular expression in an Emerging Threats Open ruleset.
Exploitability
AV:NAC:LPR:NUI:NScope
S:UImpact
C:LI:LA:L7.3/CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L