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CVE-2007-1662

: pcre < 7.3 unmatched bracket/paren past EoS read issue

Perl-Compatible Regular Expression (PCRE) library before 7.3 reads past the end of the string when searching for unmatched brackets and parentheses, which allows context-dependent attackers to cause a denial of service (crash), possibly involving forward references.

CVSS 2.0 · 5.0 Medium EPSS 2.5% KEV · Not listed
Vendors
Pcre
Products
Pcre
CVE-2007-4766

: pcre < 7.3 integer overflows

Multiple integer overflows in Perl-Compatible Regular Expression (PCRE) library before 7.3 allow context-dependent attackers to cause a denial of service (crash) or execute arbitrary code via unspecified escape (backslash) sequences.

CVSS 2.0 · 7.5 High EPSS 4.2% KEV · Not listed
Vendors
Pcre
Products
Pcre
CVE-2007-4767

: pcre < 7.3 \p, \P, \P{x] length calculation issue

Perl-Compatible Regular Expression (PCRE) library before 7.3 does not properly compute the length of (1) a \p sequence, (2) a \P sequence, or (3) a \P{x} sequence, which allows context-dependent attackers to cause a denial of service (infinite loop or crash) or execute arbitrary code.

CVSS 2.0 · 5.0 Medium EPSS 5.1% KEV · Not listed
Vendors
Pcre
Products
Pcre
CVE-2005-2491

pcre heap overflow

Integer overflow in pcre_compile.c in Perl Compatible Regular Expressions (PCRE) before 6.2, as used in multiple products such as Python, Ethereal, and PHP, allows attackers to execute arbitrary code via quantifier values in regular expressions, which leads to a heap-based buffer overflow.

CVSS 2.0 · 7.5 High EPSS 4.3% KEV · Not listed
Vendors
Pcre Redhat
Products
Pcre Enterprise Linux
CVE-2005-4872

pcre incorrect memory requirement computation

Perl-Compatible Regular Expression (PCRE) library before 6.2 does not properly count the number of named capturing subpatterns, which allows context-dependent attackers to cause a denial of service (crash) via a regular expression with a large number of named subpatterns, which triggers a buffer overflow. NOTE: this issue was originally subsumed by CVE-2006-7224, but that CVE has been REJECTED and split.

CVSS 2.0 · 4.3 Medium EPSS 2.3% KEV · Not listed
Vendors
Pcre Redhat
Products
Pcre Enterprise Linux
CVE-2025-58050

PCRE2: heap-buffer-overflow read in match_ref due to missing boundary restoration in SCS

The PCRE2 library is a set of C functions that implement regular expression pattern matching. In version 10.45, a heap-buffer-overflow read vulnerability exists in the PCRE2 regular expression matching engine, specifically within the handling of the (*scs:...) (Scan SubString) verb when combined with (*ACCEPT) in src/pcre2_match.c. This vulnerability may potentially lead to information disclosure if the out-of-bounds data read during the memcmp affects the final match result in a way observable by the attacker. This issue has been resolved in version 10.46.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Pcre
Products
Pcre2
CVE-2017-11164

pcre: OP_KETRMAX feature in the match function in pcre_exec.c

In PCRE 8.41, the OP_KETRMAX feature in the match function in pcre_exec.c allows stack exhaustion (uncontrolled recursion) when processing a crafted regular expression.

CVSS 3.0 · 7.5 High EPSS 3.1% KEV · Not listed
Vendors
Pcre
Products
Pcre
CVE-2017-8786

pcre2: Heap-based buffer overflow in pcre2test.c

pcre2test.c in PCRE2 10.23 allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression.

CVSS 3.0 · 9.8 Critical EPSS 4.1% KEV · Not listed
Vendors
Pcre
Products
Pcre2
CVE-2017-6004

pcre: Out-of-bounds read in compile_bracket_matchingpath function (8.41/3)

The compile_bracket_matchingpath function in pcre_jit_compile.c in PCRE through 8.x before revision 1680 (e.g., the PHP 7.1.1 bundled version) allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted regular expression.

CVSS 3.0 · 7.5 High EPSS 4.5% KEV · Not listed
Vendors
Pcre Redhat
Products
Pcre Jboss Core Services
CVE-2017-7186

pcre: Invalid Unicode property lookup (8.41/7, 10.24/2)

libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow remote attackers to cause a denial of service (segmentation violation for read access, and application crash) by triggering an invalid Unicode property lookup.

CVSS 3.0 · 7.5 High EPSS 5.0% KEV · Not listed
Vendors
Pcre Redhat
Products
Pcre Pcre2 Jboss Core Services
CVE-2017-7244

pcre: invalid memory read in _pcre32_xclass (pcre_xclass.c)

The _pcre32_xclass function in pcre_xclass.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (invalid memory read) via a crafted file.

CVSS 3.0 · 5.5 Medium EPSS 2.0% KEV · Not listed
Vendors
Pcre Redhat
Products
Pcre Jboss Core Services
CVE-2017-7245

pcre: stack-based buffer overflow write in pcre32_copy_substring

Stack-based buffer overflow in the pcre32_copy_substring function in pcre_get.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (WRITE of size 4) or possibly have unspecified other impact via a crafted file.

CVSS 3.0 · 7.8 High EPSS 2.4% KEV · Not listed
Vendors
Pcre Redhat
Products
Pcre Jboss Core Services
CVE-2017-7246

pcre: stack-based buffer overflow write in pcre32_copy_substring

Stack-based buffer overflow in the pcre32_copy_substring function in pcre_get.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (WRITE of size 268) or possibly have unspecified other impact via a crafted file.

CVSS 3.0 · 7.8 High EPSS 2.6% KEV · Not listed
Vendors
Pcre Redhat
Products
Pcre Jboss Core Services
CVE-2017-8399

pcre2: Stack-based buffer overflow in pcre2_match.c

PCRE2 before 10.30 has an out-of-bounds write caused by a stack-based buffer overflow in pcre2_match.c, related to a "pattern with very many captures."

CVSS 3.0 · 9.8 Critical EPSS 3.1% KEV · Not listed
Vendors
Pcre
Products
Pcre2
CVE-2015-8390

pcre: uninitialized memory read triggered by malformed posix character class (8.38/22)

PCRE before 8.38 mishandles the [: and \\ substrings in character classes, which allows remote attackers to cause a denial of service (uninitialized memory read) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

CVSS 3.1 · 9.8 Critical EPSS 4.7% KEV · Not listed
Vendors
Fedoraproject Pcre Php
Products
Fedora Perl Compatible Regular Expression Library Php
CVE-2015-8391

pcre: inefficient posix character class syntax check (8.38/16)

The pcre_compile function in pcre_compile.c in PCRE before 8.38 mishandles certain [: nesting, which allows remote attackers to cause a denial of service (CPU consumption) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

CVSS 3.1 · 9.8 Critical EPSS 6.4% KEV · Not listed
Vendors
Fedoraproject Oracle Pcre and 2 more
Products
Fedora Linux Pcre and 9 more
CVE-2015-8392

pcre: buffer overflow caused by patterns with duplicated named groups with (?| (8.38/27)

PCRE before 8.38 mishandles certain instances of the (?| substring, which allows remote attackers to cause a denial of service (unintended recursion and buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror, a related issue to CVE-2015-8384 and CVE-2015-8395.

CVSS 2.0 · 7.5 High EPSS 3.6% KEV · Not listed
Vendors
Pcre Redhat
Products
Perl Compatible Regular Expression Library Rhel Software Collections
CVE-2015-8394

pcre: Integer overflow caused by missing check for certain conditions (8.38/31)

PCRE before 8.38 mishandles the (?(<digits>) and (?(R<digits>) conditions, which allows remote attackers to cause a denial of service (integer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

CVSS 3.1 · 9.8 Critical EPSS 4.8% KEV · Not listed
Vendors
Pcre Php
Products
Perl Compatible Regular Expression Library Php
CVE-2015-8395

pcre: Buffer overflow caused by duplicate named references (8.38/36)

PCRE before 8.38 mishandles certain references, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror, a related issue to CVE-2015-8384 and CVE-2015-8392.

CVSS 2.0 · 7.5 High EPSS 3.5% KEV · Not listed
Vendors
Pcre Redhat
Products
Perl Compatible Regular Expression Library Rhel Software Collections