CVE-2023-1894

MEDIUMNVD 5.35.3—

5.3

A Regular Expression Denial of Service (ReDoS) issue was discovered in Puppet Server 7.9.2 certificate validation. An issue related to specifically crafted certificate names significantly slowed down server operations.

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 19.9%
KEV: Not listed

Published

May 4, 2023

Last Modified

January 29, 2025

References (2)

security@puppethttps://www.puppet.com/security/cve/cve-2023-1894-puppet-server-redos
af854a3a-2127-422b-91ae-364da2661108https://www.puppet.com/security/cve/cve-2023-1894-puppet-server-redos

Vendor Advisories for CVE-2023-1894(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

RHSA-2023:6818
Red Hat Product SecurityHigh
Red Hat Security Advisory: Satellite 6.14 security and bug fix update

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	puppetserver-0:7.11.0-1.el8sat	2023-11-08	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-1333Inefficient Regular Expression Complexity (ReDoS)

Data Freshness Timeline

(refreshed 9× in last 7d / 9× 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.

2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 01:54 UTCEG score recompute
2026-05-25 01:54 UTCVendor advisory
2026-05-25 01:54 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-1894?

CVE-2023-1894 is a medium vulnerability published on May 4, 2023. A Regular Expression Denial of Service (ReDoS) issue was discovered in Puppet Server 7.9.2 certificate validation. An issue related to specifically crafted certificate names significantly slowed down server operations.

When was CVE-2023-1894 disclosed?

CVE-2023-1894 was first published in the National Vulnerability Database on May 4, 2023, with the most recent update on January 29, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-1894 actively exploited?

CVE-2023-1894 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-1894?

CVE-2023-1894 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2023-1894?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-1894, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-1894

Explore →

Is Your Infrastructure Affected by CVE-2023-1894?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2023-1894

Published

Last Modified

References (2)

Vendor Advisories for CVE-2023-1894(1)

Patch Availability(1)

Weakness Classification(1)

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-1894?

Same vendor

Same CWE

CVE-2023-1894

📅 Published

🔄 Last Modified

🔗 References (2)

📣 Vendor Advisories for CVE-2023-1894(1)

Patch Availability(1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-1894?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

References (2)

Vendor Advisories for CVE-2023-1894(1)

Frequently asked(5)

Related CVEs(same vendor + same CWE)