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CVE-2024-27316Apache HTTP Server: HTTP/2 DoS by memory exhaustion on endless continuation frames
- 7.5HighCVSS base score
- 88.8%Exploitation in 30 daysEPSS · top 0.2% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion.
Timeline
ID reserved
By apache
- 41 days later
· 41 days later
Published
- 19 months later
· 19 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 88.8% · top 0.2% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
Apache Software Foundation · Apache HTTP Server
- affected 2.4.17 – ≤ 2.4.58
References
References10
- https://httpd.apache.org/security/vulnerabilities_24.html (opens in a new tab)vendor-advisoryx_transferred
- https://www.openwall.com/lists/oss-security/2024/04/03/16 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/04/04/4 (opens in a new tab)x_transferred
- https://support.apple.com/kb/HT214119 (opens in a new tab)x_transferred
- http://seclists.org/fulldisclosure/2024/Jul/18 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html (opens in a new tab)
- https://lists.fedoraproject.org/archives/list/[email protected]/message/MIUBKSCJGPJ6M2U63V6BKFDF725ODLG7/ (opens in a new tab)
- https://security.netapp.com/advisory/ntap-20240415-0013/ (opens in a new tab)
- https://www.kb.cert.org/vuls/id/421644 (opens in a new tab)
- https://lists.fedoraproject.org/archives/list/[email protected]/message/FO73U3SLBYFGIW2YKXOK7RI4D6DJSZ2B/ (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-24531 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-27316)Record last updated .