What is CVE-2023-0650?

CVE-2023-0650 is a low-severity vulnerability in Yetanotherforum Yaf.net, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2023-02-02.

How severe is CVE-2023-0650?

Low severity. CVSS v3 base score is 3.5 out of 10.

XSS in Yetanotherforum Yaf.net

CVE-2023-0650

A vulnerability was found in YAFNET up to 3.1.11 and classified as problematic. This issue affects some unknown processing of the component Signature Handler. The manipulation 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 3.1.12 is able to address this issue. The identifier of the patch is a1442a2bacc3335461b44c250e81f8d99c60735f. It is recommended to upgrade the affected component. The identifier VDB-220037 was assigned to this vulnerability.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-02-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Yetanotherforum Yaf.net
Yafnet — versions 3.1.0, 3.1.1, 3.1.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

vuldb.com/ (technical-description, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, Third Party Advisory)
drive.google.com/drive/folders/1iJuhjLQy3QPIgKKgWUzEEfr_q0boaR00 (Exploit, Mailing List, Third Party Advisory, exploit)
github.com/YAFNET/YAFNET/security/advisories/GHSA-mg6p-jjff-7g5m (related, Exploit, Third Party Advisory)
github.com/YAFNET/YAFNET/commit/a1442a2bacc3335461b44c250e81f8d99c60735f (Patch, patch)
github.com/YAFNET/YAFNET/releases/tag/v3.1.12 (Release Notes, patch)

Frequently asked questions

What is CVE-2023-0650?: CVE-2023-0650 is a low-severity vulnerability in Yetanotherforum Yaf.net, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2023-02-02.
How severe is CVE-2023-0650?: Low severity. CVSS v3 base score is 3.5 out of 10.