Public proof of conceptFix available

CVE-2024-27316

Q: Is CVE-2024-27316 actively exploited?

Active exploitation of CVE-2024-27316 has not been confirmed. Its EPSS score was 91.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2024-27316?

CVE-2024-27316 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

A public proof of concept exists; no exploitation attested.

Published2024-04-04
WeaknessCWE-770

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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

dates in UTC

2024-04-0420:15CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2024-27316?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2024-27316?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV · CISA-ADP

Fedoraproject fedora

Branch	Affected	Fixed in	Source
38.x	= 38	no fix published	NVD
39.x	= 39	no fix published	NVD
40.x	= 40	no fix published	NVD

Apache HTTP Server

Branch	Affected	Fixed in	Source
2.4	≥ 2.4.17, < 2.4.59	2.4.59	NVD · OSV
2.4	≥ 2.4.17, ≤ 2.4.58	no fix published	CISA-ADP

Netapp ontap

Branch	Affected	Fixed in	Source
9.x	= 9	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

httpdAlmaLinux:8all versions · fixed in 2.4.37-62.module_el8.9.0+3646+acd210d0and 6 other packages
mod_http2AlmaLinux:9all versions · fixed in 1.15.19-5.el9_3.1
mod_http2AlmaLinux:9all versions · fixed in 2.0.26-2.el9_4
mod_http2AlmaLinux:8all versions · fixed in 1.15.7-8.module_el8.9.0+3809+48080a14.5.alma.1
mod_mdAlmaLinux:8all versions · fixed in 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa
mod_mdAlmaLinux:8all versions · fixed in 1:2.0.8-8.module_el8.6.0+3031+fb177b09
mod_sslAlmaLinux:8all versions · fixed in 1:2.4.37-62.module_el8.9.0+3646+acd210d0and 1 other package

Full record on NVD

Fix

Advisories and patches

httpd.apache.orgRelease Notes

Detection

read 2026-10-23 19:24 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 2 repositories, unverifiedlockness-Ko/CVE-2024-27316aeyesec/CVE-2024-27316_poc

Sources

CISA-ADPSSVC decisionnone2024-07-29
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.17.52024-07-29
NVDCVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-770read 2026-10-23
NVDweakness (CWE)CWE-770read 2026-10-23
FIRST EPSSEPSS score91.3 %read 2026-10-23
PoC-in-GitHubproof of concept2read 2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2024-04-04
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2024-27316?

Is CVE-2024-27316 actively exploited?

Active exploitation of CVE-2024-27316 has not been confirmed. Its EPSS score was 91.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-27316?

CVE-2024-27316 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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