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4 vulnerabilities by SHAY
CVE-2026-8376 (GCVE-0-2026-8376)
Vulnerability from nvd – Published: 2026-05-25 23:53 – Updated: 2026-05-27 18:04
VLAI
Title
Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds
Summary
Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds.
Perl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer.
A caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-680 - Integer Overflow to Buffer Overflow
Assigner
References
2 references
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CVE-2026-4176 (GCVE-0-2026-4176)
Vulnerability from nvd – Published: 2026-03-29 20:50 – Updated: 2026-03-30 15:35
VLAI
Title
Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib
Summary
Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib.
Compress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1395 - Dependency on Vulnerable Third-Party Component
Assigner
References
7 references
| URL | Tags |
|---|---|
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| https://lists.security.metacpan.org/cve-announce/… | vendor-advisory |
| https://github.com/Perl/perl5/commit/c75ae9cc1642… | patch |
| https://metacpan.org/release/PMQS/Compress-Raw-Zl… | release-notes |
| https://metacpan.org/release/SHAY/perl-5.40.4/changes | release-notes |
| https://metacpan.org/release/SHAY/perl-5.42.2/changes | release-notes |
| http://www.openwall.com/lists/oss-security/2026/03/30/2 |
Impacted products
Credits
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CVE-2026-8376 (GCVE-0-2026-8376)
Vulnerability from cvelistv5 – Published: 2026-05-25 23:53 – Updated: 2026-05-27 18:04
VLAI
Title
Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds
Summary
Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds.
Perl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer.
A caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-680 - Integer Overflow to Buffer Overflow
Assigner
References
2 references
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CVE-2026-4176 (GCVE-0-2026-4176)
Vulnerability from cvelistv5 – Published: 2026-03-29 20:50 – Updated: 2026-03-30 15:35
VLAI
Title
Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib
Summary
Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib.
Compress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1395 - Dependency on Vulnerable Third-Party Component
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://www.cve.org/CVERecord?id=CVE-2026-3381 | vendor-advisoryrelatedvdb-entry |
| https://lists.security.metacpan.org/cve-announce/… | vendor-advisory |
| https://github.com/Perl/perl5/commit/c75ae9cc1642… | patch |
| https://metacpan.org/release/PMQS/Compress-Raw-Zl… | release-notes |
| https://metacpan.org/release/SHAY/perl-5.40.4/changes | release-notes |
| https://metacpan.org/release/SHAY/perl-5.42.2/changes | release-notes |
| http://www.openwall.com/lists/oss-security/2026/03/30/2 |
Impacted products
Credits
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"lang": "en",
"type": "CWE"
}
]
}
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
}
],
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{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "perl",
"product": "perl",
"repo": "https://github.com/Perl/perl5",
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{
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"version": "5.43.0",
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}
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"credits": [
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"lang": "en",
"type": "reporter",
"value": "Bernhard Schmalhofer"
}
],
"descriptions": [
{
"lang": "en",
"value": "Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib.\n\nCompress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94."
}
],
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"tags": [
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"vdb-entry"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-3381"
},
{
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],
"url": "https://lists.security.metacpan.org/cve-announce/msg/37638919/"
},
{
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"url": "https://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94"
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{
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{
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"url": "https://metacpan.org/release/SHAY/perl-5.40.4/changes"
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{
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"url": "https://metacpan.org/release/SHAY/perl-5.42.2/changes"
}
],
"solutions": [
{
"lang": "en",
"value": "Update to Perl stable release 5.40.4 or 5.42.2 or later, which include Compress::Raw::Zlib 2.222."
}
],
"source": {
"discovery": "UNKNOWN"
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{
"lang": "en",
"time": "2026-02-27T00:00:00.000Z",
"value": "Compress::Raw::Zlib 2.221 committed to Perl blead."
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{
"lang": "en",
"time": "2026-03-07T00:00:00.000Z",
"value": "CVE-2026-3381 published for Compress::Raw::Zlib."
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{
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"time": "2026-03-14T00:00:00.000Z",
"value": "CVE-2026-4176 reserved."
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{
"lang": "en",
"time": "2026-03-29T00:00:00.000Z",
"value": "Perl 5.40.4 and 5.42.2 released."
}
],
"title": "Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib",
"workarounds": [
{
"lang": "en",
"value": "Install Compress::Raw::Zlib 2.220 or later into your @INC include path, so it takes precedence over the vulnerable core module shipped with Perl.\n\nSome OS distributions patch their perl package to build Compress::Raw::Zlib against the system zlib rather than the vendored copy. Users of these distributions may not be affected if their system zlib has been updated to 1.3.2 or later, or includes backported patches for the relevant vulnerabilities."
}
],
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"datePublished": "2026-03-29T20:50:51.058Z",
"dateReserved": "2026-03-14T16:17:19.077Z",
"dateUpdated": "2026-03-30T15:35:08.162Z",
"state": "PUBLISHED"
},
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