Serving WebSocket protocol upgrades over a HTTP/2 connection could result in a Null Pointer dereference, leading to a crash of the server process, degrading performance.
CVE-2024-36387
Score 5.4 from GitHub Security Advisory published 2024-07-01. NVD baseline CVSS 5.4; sources differ by 0.0.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.4
- EG Score
- 5.4(medium)
- EPSS
- 74.9%
- KEV
- Not listed
Published
July 1, 2024
Last Modified
November 6, 2025
References (5)
- security@apachehttps://httpd.apache.org/security/vulnerabilities_24.html
- security@apachehttps://security.netapp.com/advisory/ntap-20240712-0001/
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/07/01/4
- af854a3a-2127-422b-91ae-364da2661108https://httpd.apache.org/security/vulnerabilities_24.html
- af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20240712-0001/
Vendor Advisories for CVE-2024-36387(4)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- CVE-2024-36387Microsoft Security Response Center (MSRC)Medium
Apache HTTP Server: DoS by Null pointer in websocket over HTTP/2
- RHSA-2025:3452Red Hat Product SecurityLow
Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.62 security update
- RHSA-2025:3453Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.62 security update
- RHSA-2024:8680Red Hat Product SecurityLow
Red Hat Security Advisory: mod_http2 security update
Patch Availability(4)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | libapache2-mod-proxy-uwsgi (2.4.58-1ubuntu8.2) @ noble | 2026-05-23 | ubuntu |
| redhat | jbcs-httpd24-mod_http2-0:2.0.29-3.el7jbcs | 2025-04-02 | redhat |
| redhat | mod_http2 | 2025-04-02 | redhat |
| redhat | mod_http2-0:2.0.26-2.el9_4.1 | 2024-10-31 | 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.
Additional Vendor Advisories
(1)
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 13× in last 7d / 47× 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.
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- 2026-05-23 23:06 UTCVendor advisory
- 2026-05-23 23:06 UTCGHSA enrichment
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Frequently asked(5)
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