CVE-2023-38709

HIGHNVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2024-04-04. NVD baseline CVSS 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 4%CVSS: 7.3Exploit: NoneExposed: 0

A fix is available — apply it.

Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP responses.

This issue affects Apache HTTP Server: through 2.4.58.

CVSS v3
7.3
EG Score
7.3(medium)
EG Risk
—
EPSS
89.2%
KEV
Not listed

Published

April 4, 2024

Last Modified

November 4, 2025

References (20)

Vendor Advisories for CVE-2023-38709(3)

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

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuapache2-utils (2.4.18-2ubuntu3.17+esm12) @ xenial2026-05-24ubuntu
ubuntulibapache2-mod-proxy-uwsgi (2.4.57-2ubuntu2.4) @ mantic2026-05-24ubuntu
ubuntulibapache2-mod-proxy-uwsgi (2.4.58-1ubuntu8.1) @ noble2026-05-24ubuntu
redhathttpd-0:2.4.62-1.el92024-11-12redhat
redhatjbcs-httpd24-httpd-0:2.4.57-15.el7jbcs2024-09-24redhat
redhathttpd2024-09-24redhat
redhathttpd:2.4-8100020240612075645.489197e62024-07-01redhat

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.

Additional Vendor Advisories

(5)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 50× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 105 total refreshes for this CVE.

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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCmrmtwoj/apache-vulnerability-testing
    First seen Oct 5, 2024

    Apache HTTP Server Vulnerability Testing Tool | PoC for CVE-2024-38472 , CVE-2024-39573 , CVE-2024-38477 , CVE-2024-38476 , CVE-2024-38475 , CVE-2024-38474 , CVE-2024-38473 , CVE-2023-38709

    Open source ↗

Frequently asked(5)

What is CVE-2023-38709?
CVE-2023-38709 is a high vulnerability published on April 4, 2024. Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP responses. This issue affects Apache HTTP Server: through 2.4.58.
When was CVE-2023-38709 disclosed?
CVE-2023-38709 was first published in the National Vulnerability Database on April 4, 2024, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-38709 actively exploited?
CVE-2023-38709 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-38709?
CVE-2023-38709 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2023-38709?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-38709, 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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