TI-2024-19070 Aliases CVE-2024-28871

Excessive CPU used on malformed traffic

MEDIUM 40CWE-770Published 2024-04-04 · Updated 2024-08-26

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770.

Summary

LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Version 0.5.46 may parse malformed request traffic, leading to excessive CPU usage. Version 0.5.47 contains a patch for the issue. No known workarounds are available.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00841 58th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OISF	libhtp	= 0.5.46	—	No fix listed	CNA

libhtp VendorOISF Affected = 0.5.46 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:oisf:libhtp:0.5.46:::::::*	0.5.46	Vulnerable	OISF

cpe:2.3:a:oisf:libhtp:0.5.46:*:*:*:*:*:*:* Versions 0.5.46 Vulnerable ·OISF

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-28871

References

Patch 2

Advisory 1

https://github.com/OISF/libhtp/security/advisories/GHSA-ffr2-45w9-7wmg

Other 1

https://redmine.openinfosecfoundation.org/issues/6757

TI-2018-07267 htp_parse_authorization_digest in htp_parsers.c in LibHTP 0.5.26 allows remote attackers… CVSS 3.0CRITICAL 9.8
TI-2024-15831 LibHTP unbounded folded header handling leads to denial service CVSS 3.1HIGH 7.5
TI-2024-30764 LibHTP's unbounded header handling leads to denial service CVSS 3.1HIGH 7.5
TI-2025-33481 LibHTP's memory leak with lzma can lead to resource starvation CVSS 3.1HIGH 7.5
TI-2015-00864 libhtp 0.5.15 allows remote attackers to cause a denial of service (NULL pointer dereference). CVSS 3.1HIGH 7.5
TI-2019-13009 In OISF LibHTP before 0.5.31, as used in Suricata 4.1.4 and other products, an HTTP… CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences