CVE-2024-24806: libuv is a multi-platform support library with a focus on asynchronous I/O

This week

HIGH 7.3REMOTEUPGRADE

CVE-2024-24806 is a high-severity flaw (CVSS 7.3) affecting libuv. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

libuv is a multi-platform support library with a focus on asynchronous I/O. The `uv_getaddrinfo` function in `src/unix/getaddrinfo.c` (and its windows counterpart `src/win/getaddrinfo.c`), truncates hostnames to 256 characters before calling `getaddrinfo`. This behavior can be exploited to create addresses like `0x00007f000001`, which are considered valid by `getaddrinfo` and could allow an attacker to craft payloads that resolve to unintended IP

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	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-918
Published	2024-02-07
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2024-02-07 22:15 UTCPublished CVE record published
2026-06-17 07:14 UTCUpdated Record last modified

libuv libuv UPGRADE

Affected: >= 1.24.0 and < 1.48.0

Fixed in: 1.48.0

Safe to downgrade to: a release before 1.24.0

1. Check installed version

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

2. UPGRADE to 1.48.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libuv

Note

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

3. If no update is available yet, DOWNGRADE to a release before 1.24.0 (Debian / Ubuntu)

apt-cache madison libuv sudo apt install libuv=<VERSION_BEFORE_1.24.0> sudo apt-mark hold libuv

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list libuv sudo dnf downgrade libuv-<VERSION_BEFORE_1.24.0> sudo dnf versionlock add libuv

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2024-24806?

libuv: upgrade to 1.48.0. Exact commands for each OS are on this page.

Is CVE-2024-24806 being exploited?

CVE-2024-24806 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-2024-24806 affect?

CVE-2024-24806 affects libuv. Severity is high (CVSS 7.3). libuv is a multi-platform support library with a focus on asynchronous I/O. The `uv_getaddrinfo` function in `src/unix/getaddrinfo.c` (and its windows counterpart `src/win/getaddrinfo.c`), truncates hostnames to 256 characters before callin

How urgent is CVE-2024-24806?

Priority 56/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Windows vulnerabilities

References

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