CVE-2023-0549

Name: CVE-2023-0549
Creator: NVD / NIST
Published: 2023-01-27T19:15:10.457+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.69%

Last modified Jun 17, 2026

CVE-2023-0549 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A vulnerability, which was classified as problematic, has been found in YAFNET up to 3.1.10. This issue affects some unknown processing of the file /forum/PostPrivateMessage of the component Private Message Handler. EPSS estimates a 0.69% chance of exploitation in the next 30 days.

Description

A vulnerability, which was classified as problematic, has been found in YAFNET up to 3.1.10. This issue affects some unknown processing of the file /forum/PostPrivateMessage of the component Private Message Handler. The manipulation of the argument subject/message leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 3.1.11 is able to address this issue. The identifier of the patch is 2237a9d552e258a43570bb478a92a5505e7c8797. It is recommended to upgrade the affected component. The identifier VDB-219665 was assigned to this vulnerability.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.69%

48.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Yetanotherforum	Yaf.Net	>= 3.1.0, <= 3.1.10

References

https://drive.google.com/drive/folders/1ct6Tp_cnsYO8L_JSvlBCf_Ae7KW3JAcD?usp=sharingExploit, Third Party Advisory
https://github.com/YAFNET/YAFNET/commit/2237a9d552e258a43570bb478a92a5505e7c8797Patch
https://github.com/YAFNET/YAFNET/releases/tag/v3.1.11Release Notes
https://github.com/YAFNET/YAFNET/security/advisories/GHSA-4hwx-678w-9cp5Exploit, Third Party Advisory
https://vuldb.com/?ctiid.219665Third Party Advisory
https://vuldb.com/?id.219665Third Party Advisory
https://drive.google.com/drive/folders/1ct6Tp_cnsYO8L_JSvlBCf_Ae7KW3JAcD?usp=sharingExploit, Third Party Advisory
https://github.com/YAFNET/YAFNET/commit/2237a9d552e258a43570bb478a92a5505e7c8797Patch
https://github.com/YAFNET/YAFNET/releases/tag/v3.1.11Release Notes
https://github.com/YAFNET/YAFNET/security/advisories/GHSA-4hwx-678w-9cp5Exploit, Third Party Advisory
https://vuldb.com/?ctiid.219665Third Party Advisory
https://vuldb.com/?id.219665Third Party Advisory

Timeline

Published: Jan 27, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-0549?

How severe is CVE-2023-0549?

CVE-2023-0549 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.

How do I fix CVE-2023-0549?

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-2023-0549?

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

Scan your code now

Source: NVD / NIST