4.8

CVE-2022-28352: weechat Improper Certificate Validation

CVSS: 4.8v3.1MediumModified
AliasesUBUNTU-CVE-2022-28352DEBIAN-CVE-2022-28352
Published 02-04-2022Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2022-28352 is a medium (CVSS 4.8) Improper Certificate Validation vulnerability in weechat. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.5% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
4.8/10
010
Medium · v3.1 (NVD)
EPSS score
0.43%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2github, reference

Timeline

  1. 02-04-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

0.00 pp

From 0.43% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.43%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • githubUnverified

    Weechat

    Maturity: poc

  • referenceUnverified

    Exploit Reference (weechat.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • weechat< 3.4.1-1
Ubuntu1 product
  • weechatAll versions (No fix recorded)
Weechat1 product

3 vendors · 3 products

References

5 links