CVE-2024-46613: WeeChat before 4.4.2 has an integer overflow and resultant buffer overflow at core/core-string.c when there ar

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CRITICAL 9.8REMOTEUPGRADE

CVE-2024-46613 is a critical-severity flaw (CVSS 9.8) affecting weechat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WeeChat before 4.4.2 has an integer overflow and resultant buffer overflow at core/core-string.c when there are more than two billion items in a list. This affects string_free_split_shared , string_free_split, string_free_split_command, and string_free_split_tags.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-190
Published	2024-11-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: weechat

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

Am I affected?

Timeline

2024-11-10 21:15 UTCPublished CVE record published
2026-06-17 07:55 UTCUpdated Record last modified

weechat weechat UPGRADE

Affected: >= 0.1.6 and < 4.4.2

Fixed in: 4.4.2

Safe to downgrade to: a release before 0.1.6

1. Check installed version

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

2. UPGRADE to 4.4.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade weechat

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 0.1.6 (Debian / Ubuntu)

apt-cache madison weechat sudo apt install weechat=<VERSION_BEFORE_0.1.6> sudo apt-mark hold weechat

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

dnf --showduplicates list weechat sudo dnf downgrade weechat-<VERSION_BEFORE_0.1.6> sudo dnf versionlock add weechat

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-2024-46613?

weechat: upgrade to 4.4.2. Exact commands for each OS are on this page.

Is CVE-2024-46613 being exploited?

CVE-2024-46613 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-2024-46613 affect?

CVE-2024-46613 affects weechat. Severity is critical (CVSS 9.8). WeeChat before 4.4.2 has an integer overflow and resultant buffer overflow at core/core-string.c when there are more than two billion items in a list. This affects string_free_split_shared , string_free_split, string_free_split_command, and

How urgent is CVE-2024-46613?

Priority 50/100. Critical severity; Remotely exploitable, no login, no user action

References

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