CVE-2026-30479

CRITICALNVD 9.19.1—Elevated

9.1

A Dynamic-link Library Injection vulnerability in OSGeo Project MapServer before v8.0 allows attackers to execute arbitrary code via a crafted executable.

CVSS v3: 9.1
EG Score: 9.1(medium)
EPSS: 27.7%
KEV: Not listed

Published

April 9, 2026

Last Modified

April 14, 2026

Advisory Details (2)

Auto-updated May 20, 2026

🔬 Proof of concept available. No patch confirmed yet.

generic🟡 PoC Available

Research/CVE-2026-30479 at main · penjaminTester/Research · GitHub

https://github.com/penjaminTester/Research/tree/main/CVE-2026-30479

generic

Welcome to MapServer — MapServer 8.6.3 documentation

https://mapserver.org/index.html

Weakness Classification(1)

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

CWE-94Improper Control of Generation of Code (Code Injection)

Data Freshness Timeline

(refreshed 17× in last 7d / 20× 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.

2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:16 UTCepss_batch
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2026-05-29 13:44 UTCepss_batch
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2026-05-27 13:40 UTCepss_batch
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2026-05-26 13:44 UTCepss_batch
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2026-05-24 16:59 UTCepss_batch
2026-05-23 15:21 UTCepss_batch
2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2026-30479?

CVE-2026-30479 is a critical vulnerability published on April 9, 2026. A Dynamic-link Library Injection vulnerability in OSGeo Project MapServer before v8.0 allows attackers to execute arbitrary code via a crafted executable.

When was CVE-2026-30479 disclosed?

CVE-2026-30479 was first published in the National Vulnerability Database on April 9, 2026, with the most recent update on April 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-30479 actively exploited?

CVE-2026-30479 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-30479?

CVE-2026-30479 has a CVSS v3 base score of 9.1 (NVD).

How do I remediate CVE-2026-30479?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-30479, 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-2026-30479

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CVE-2026-30479

📅 Published

🔄 Last Modified

📋 Advisory Details (2)