CVE-2024-45797: LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces

Q: How do I fix CVE-2024-45797?

libhtp: upgrade to 0.5.49. Exact commands for each OS are on this page.

Q: Is CVE-2024-45797 being exploited?

CVE-2024-45797 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-45797 affect?

CVE-2024-45797 affects libhtp. Severity is high (CVSS 7.5). 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 lead

Q: How urgent is CVE-2024-45797?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2024-45797 is a high-severity flaw (CVSS 7.5) affecting libhtp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-770
Published	2024-10-16
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: oisf

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-10-16 19:15 UTCPublished CVE record published
2026-06-17 07:54 UTCUpdated Record last modified

oisf libhtp UPGRADE

Affected: < 0.5.49

Fixed in: 0.5.49

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libhtp || rpm -q libhtp || libhtp --version

2. UPGRADE to 0.5.49 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libhtp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libhtp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-45797?

libhtp: upgrade to 0.5.49. Exact commands for each OS are on this page.

Is CVE-2024-45797 being exploited?

CVE-2024-45797 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-45797 affect?

CVE-2024-45797 affects libhtp. Severity is high (CVSS 7.5). 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 lead

How urgent is CVE-2024-45797?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-53537 HIGH 7.5 UPGRADE LibHTP is a security-aware parser for the HTTP protocol and its related bits and pieces

References

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