CVE-2018-18313

CRITICALNVD 9.19.1—

9.1

Perl before 5.26.3 has a buffer over-read via a crafted regular expression that triggers disclosure of sensitive information from process memory.

CVSS v3: 9.1
EG Score: 9.1(medium)
EPSS: 89.4%
KEV: Not listed

Published

December 7, 2018

Last Modified

November 21, 2024

References (34)

cve@mitrehttp://seclists.org/fulldisclosure/2019/Mar/49
cve@mitrehttp://www.securitytracker.com/id/1042181
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:0001
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:0010
cve@mitrehttps://bugzilla.redhat.com/show_bug.cgi?id=1646738
cve@mitrehttps://github.com/Perl/perl5/commit/43b2f4ef399e2fd7240b4eeb0658686ad95f8e62
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWQGEB543QN7SSBRKYJM6PSOC3RLYGSM/
cve@mitrehttps://metacpan.org/changes/release/SHAY/perl-5.26.3
cve@mitrehttps://rt.perl.org/Ticket/Display.html?id=133192
cve@mitrehttps://seclists.org/bugtraq/2019/Mar/42
cve@mitrehttps://security.gentoo.org/glsa/201909-01
cve@mitrehttps://security.netapp.com/advisory/ntap-20190221-0003/
cve@mitrehttps://support.apple.com/kb/HT209600
cve@mitrehttps://usn.ubuntu.com/3834-1/
cve@mitrehttps://usn.ubuntu.com/3834-2/

Patch Availability(5)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	perl-modules-5.26 (5.26.1-6ubuntu0.3) @ bionic	2026-05-28	ubuntu
ubuntu	perl (5.14.2-6ubuntu2.9) @ precise	2026-05-28	ubuntu
redhat	perl-main-1.03-524.1.hum1	2026-04-10	redhat
redhat	rh-perl524-perl-4:5.24.0-381.el7	2019-01-02	redhat
redhat	rh-perl526-perl-Module-CoreList-1:5.20181130-1.el7	2019-01-02	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-125Out-of-bounds Read

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 19× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 00:30 UTCEG score recompute
2026-05-28 00:30 UTCVendor advisory
2026-05-28 00:29 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-18313?

CVE-2018-18313 is a critical vulnerability published on December 7, 2018. Perl before 5.26.3 has a buffer over-read via a crafted regular expression that triggers disclosure of sensitive information from process memory.

When was CVE-2018-18313 disclosed?

CVE-2018-18313 was first published in the National Vulnerability Database on December 7, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-18313 actively exploited?

CVE-2018-18313 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-18313?

CVE-2018-18313 has a CVSS v3 base score of 9.1 (NVD).

How do I remediate CVE-2018-18313?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-18313, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2018-18313

Published

Last Modified

References (34)

Patch Availability(5)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-18313?

Same vendor

Same CWE

CVE-2018-18313

📅 Published

🔄 Last Modified

🔗 References (34)

Patch Availability(5)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-18313?

🔗 Related CVEs(same vendor + same CWE)

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References (34)

Frequently asked(5)

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