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TI-2024-30764 Aliases CVE-2024-45797

LibHTP's unbounded header handling leads to denial service

Priority MEDIUM 40CWE-770Published · Updated

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
Fixed

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. Prior to version 0.5.49, unbounded processing of HTTP request and response headers can lead to excessive CPU time and memory utilization, possibly leading to extreme slowdowns. This issue is addressed in 0.5.49.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00735 54th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed libhtp (OISF): 0.5.49

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

VendorProductAffected versionsFixed inStatusSource
OISFlibhtpbefore 0.5.490.5.49Patch availableCNA
  • libhtp VendorOISF Affected before 0.5.49 Fixed in 0.5.49 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:oisf:libhtp:*:*:*:*:*:*:*:*before 0.5.49VulnerableOISF
  • cpe:2.3:a:oisf:libhtp:*:*:*:*:*:*:*:* Versions before 0.5.49 Vulnerable ·OISF

Remediation

  • Fix · CNA libhtp (OISF) Fixed in 0.5.49

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-45797

References

Exploit 2

  • 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-2024-19070 Excessive CPU used on malformed traffic 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