---
title: "CVE-2024-27316: Apache HTTP Server: HTTP/2 DoS by memory… | CubePath"
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…"
language: en
source: https://cubepath.com/security/cve/CVE-2024-27316
---

# CVE-2024-27316: Apache HTTP Server: HTTP/2 DoS by memory… | CubePath

## 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.

Official description from the CVE record, published by apache. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2024-27316)

## Key data

### CVSS 3.1 High 7.5

Score published by CISA-ADP in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

| Metric                 | Value     | What it means                                                                       |
| ---------------------- | --------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network   | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low       | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | None      | No account or privileges are needed.                                                |
| User interaction       | None      | No action from any user is needed.                                                  |
| Scope                  | Unchanged | The impact stays within the vulnerable component.                                   |
| Confidentiality impact | None      | No effect on the secrecy of data.                                                   |
| Integrity impact       | None      | No effect on the trustworthiness of data.                                           |
| Availability impact    | High      | Serious or total effect on availability.                                            |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.88755 (88.8% probability)

Percentile

99.8%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA assessment as of Jul 29, 2024

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Automatable

yes

Technical impact

partial

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-770](https://cwe.mitre.org/data/definitions/770.html) Allocation of Resources Without Limits or Throttling

## Affected products

Products listed in the CVE record, as the CNA published them.

- Apache HTTP Server

  - affected: 2.4.17 up to 2.4.58

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [httpd.apache.org/security/vulnerabilities\_24.html](https://httpd.apache.org/security/vulnerabilities%5F24.html) vendor-advisory
- [openwall.com/lists/oss-security/2024/04/03/16](https://www.openwall.com/lists/oss-security/2024/04/03/16)
- [openwall.com/lists/oss-security/2024/04/04/4](http://www.openwall.com/lists/oss-security/2024/04/04/4)
- [support.apple.com/kb/HT214119](https://support.apple.com/kb/HT214119)
- [seclists.org/fulldisclosure/2024/Jul/18](http://seclists.org/fulldisclosure/2024/Jul/18)
- [lists.debian.org/debian-lts-announce/2024/05/msg00013.html](https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html)
- [lists.fedoraproject.org/archives/list/package-announce@list…](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MIUBKSCJGPJ6M2U63V6BKFDF725ODLG7/)
- [security.netapp.com/advisory/ntap-20240415-0013](https://security.netapp.com/advisory/ntap-20240415-0013/)
- [kb.cert.org/vuls/id/421644](https://www.kb.cert.org/vuls/id/421644)
- [lists.fedoraproject.org/archives/list/package-announce@list…](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FO73U3SLBYFGIW2YKXOK7RI4D6DJSZ2B/)

## Timeline

1. ID reserved Feb 23, 2024
2. Record published Apr 4, 2024
3. Record last updated Nov 4, 2025

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## About CubePath

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:04 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)