CVE-2023-33981

Name: CVE-2023-33981
Creator: NVD / NIST
Published: 2023-05-24T18:15:10.877+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.33%

Last modified Jun 17, 2026

CVE-2023-33981 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Briar before 1.4.22 allows attackers to spoof other users' messages in a blog, forum, or private group, but each spoofed message would need to be an exact duplicate of a legitimate message displayed alongside the spoofed one.. EPSS estimates a 0.33% chance of exploitation in the next 30 days.

Description

Briar before 1.4.22 allows attackers to spoof other users' messages in a blog, forum, or private group, but each spoofed message would need to be an exact duplicate of a legitimate message displayed alongside the spoofed one.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.33%

25.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Briarproject	Briar	< 1.4.22

References

https://briarproject.org/news/2023-three-security-issues-found-and-fixed/Vendor Advisory
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_YuanmingSong.pdfExploit, Technical Description, Third Party Advisory
https://briarproject.org/news/2023-three-security-issues-found-and-fixed/Vendor Advisory
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_YuanmingSong.pdfExploit, Technical Description, Third Party Advisory

Timeline

Published: May 24, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-33981?

How severe is CVE-2023-33981?

CVE-2023-33981 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.33% probability of exploitation in the next 30 days.

How do I fix CVE-2023-33981?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-33981?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST