Is CVE-2015-8381 actively exploited?

CVE-2015-8381 has no public evidence of in-the-wild exploitation as of 2025-04-12.

What is the CVSS score for CVE-2015-8381?

CVE-2015-8381 has a CVSS score of 7.5 (UNKNOWN severity). Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P.

How do I patch CVE-2015-8381?

Patch guidance is available from pcre security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2015-8381.

Which products are affected by CVE-2015-8381?

1 product: pcre perl compatible regular expression library.

CVE-2015-8381 - remediation guidance & executive summary

Description

The compile_regex function in pcre_compile.c in PCRE before 8.38 and pcre2_compile.c in PCRE2 before 10.2x mishandles the /(?J:(?|(:(?|(?'R')(\k'R')|((?'R')))H'Rk'Rf)|s(?'R'))))/ and /(?J:(?|(:(?|(?'R')(\z(?|(?'R')(\k'R')|((?'R')))k'R')|((?'R')))H'Ak'Rf)|s(?'R')))/ patterns, and related patterns with certain group references, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

CVSS Metrics

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector: network
Access Cmplx: low
Auth: none
Confidentiality: partial
Integrity: partial
Availability: partial
Weaknesses: CWE-119 · Memory Buffer Errors

Metadata

Primary Vendor: PCRE
Published: 12/2/2015
Last Modified: 4/12/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

pcre : perl_compatible_regular_expression_library

Remediation Guidance

Executive Summary

Cite this page

CVE-2015-8381. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2015-8381

View on NIST NVD

CVE-2015-8381 vulnerability