CVE-2019-20454
HIGH
MEDIUM
Priority: 0.12
BB Relevance:
75/100
Published: 2020-02-14
Modified: 2026-11-02
First seen: 2026-11-02
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
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.
Weakness Classification (1)
Affected Software (5)
| Vendor | Product | Version |
|---|---|---|
| fedoraproject | fedora | 31 |
| n/a | n/a | n/a |
| pcre | pcre2 | 10.31 – 10.34 |
| splunk | universal_forwarder | 8.2.0 – 8.2.12 |
| splunk | universal_forwarder | 9.1.0 |
References & Advisories (7)
vendor-advisory
vendor-advisory
mailing-list