CVE-2022-28352: WeeChat (aka Wee Enhanced Environment for Chat) 3.2 to 3.4 before 3.4.1 does not properly verify the TLS certi

Routine

MEDIUM 4.3UPGRADE

CVE-2022-28352 is a medium-severity flaw (CVSS 4.3) affecting weechat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WeeChat (aka Wee Enhanced Environment for Chat) 3.2 to 3.4 before 3.4.1 does not properly verify the TLS certificate of the server, after certain GnuTLS options are changed, which allows man-in-the-middle attackers to spoof a TLS chat server via an arbitrary certificate. NOTE: this only affects situations where weechat.network.gnutls_ca_system or weechat.network.gnutls_ca_user is changed without a WeeChat restart.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-295
Published	2022-04-02
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

2022-04-02 17:15 UTCPublished CVE record published
2026-06-17 04:38 UTCUpdated Record last modified

weechat weechat UPGRADE

Affected: >= 3.2 and < 3.4.1

Fixed in: 3.4.1

Safe to downgrade to: a release before 3.2

1. Check installed version

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

2. UPGRADE to 3.4.1 (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 3.2 (Debian / Ubuntu)

apt-cache madison weechat sudo apt install weechat=<VERSION_BEFORE_3.2> 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_3.2> 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-2022-28352?

weechat: upgrade to 3.4.1. Exact commands for each OS are on this page.

Is CVE-2022-28352 being exploited?

CVE-2022-28352 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-2022-28352 affect?

CVE-2022-28352 affects weechat. Severity is medium (CVSS 4.3). WeeChat (aka Wee Enhanced Environment for Chat) 3.2 to 3.4 before 3.4.1 does not properly verify the TLS certificate of the server, after certain GnuTLS options are changed, which allows man-in-the-middle attackers to spoof a TLS chat serve

How urgent is CVE-2022-28352?

Priority 29/100. Public exploit reference

Software pages

GnuTLS vulnerabilities

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References

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