CVE-2024-27316VulnerabilityPublished 30 Apr 2024Updated 11 Oct 2026

SUSE · security update for mod_http2

Affects SUSESource GCVE Database

Authoritative record:CVE-2024-27316· High 7.5

Not known to be exploited · 91% EPSS · CVSS 7.5 High · patch available : patch SUSE as a priority.

Data as of 26 Oct 2026, 07:57 UTC

CVSS base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 91.3% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Apr 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Apacheapache/httpd`pkg:rpm/apache/httpd`Other threats	Affected =2.4.17	Fixed in–

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AI-suggested

Red Hat has released official security updates for affected versions of Red Hat Enterprise Linux 8 and 9 that address this vulnerability. Users should apply these updates as soon as possible. Detailed instructions for applying the updates are available in the Red Hat advisories and knowledge base article https://access.redhat.com/articles/11258. No additional mitigations are required beyond applying the official patches.

Description

The mod_h2 Apache httpd module implements the HTTP2 protocol (h2+h2c) on top of libnghttp2 for httpd 2.4 servers. Security Fix(es): * httpd: CONTINUATION frames DoS (CVE-2024-27316) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Impact

Successful exploitation of this vulnerability can cause a denial of service condition in the Apache httpd server running the mod_http2 module. This could disrupt web services relying on the affected httpd versions. No known exploits in the wild have been reported. The impact is limited to service availability degradation.

Summary

The mod_http2 Apache httpd module, which implements the HTTP/2 protocol on top of libnghttp2 for httpd 2.4 servers, contains a vulnerability involving CONTINUATION frames that can lead to denial of service (CVE-2024-27316). Red Hat has issued security advisories RHSA-2024:1786 and RHSA-2024:1872 providing updates for Red Hat Enterprise Linux 8 and 9 respectively to fix this issue. The vulnerability is categorized under CWE-400 (Uncontrolled Resource Consumption). The advisories include updated packages and instructions for applying the fixes.

CWE-400Uncontrolled Resource Consumption (opens in a new tab)
Class weaknessLikelihood of exploit: High
The product does not properly control the allocation and maintenance of a limited resource.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design
Design throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended. A strong authentication and access control model will help prevent such attacks from occurring in the first place.
Architecture and Design
Mitigation of resource exhaustion attacks requires that the target system either: recognizes the attack and denies that user further access for a given amount of time, or; uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed.
Architecture and Design
Ensure that protocols have specific limits of scale placed on them.
OWASP Cheat Sheets
File Upload (opens in a new tab)
OWASP ASVS 4.0.3
V12.1.1 (opens in a new tab)
Attack patterns
XML Ping of the Death (opens in a new tab)
Regular Expression Exponential Blowup (opens in a new tab)
Sustained Client Engagement (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 4 Aug 2026, 16:51 UTC

WeaknessesCWE-400

Technical details

References

Community reviews

Related threats