What is CVE-2022-30050?

CVE-2022-30050 is a medium-severity vulnerability in Sir Gnuboard, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-05-16.

How severe is CVE-2022-30050?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Sir Gnuboard

CVE-2022-30050

Gnuboard 5.55 and 5.56 is vulnerable to Cross Site Scripting (XSS) via bbs/member_confirm.php.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-05-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.7th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.7% 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

Sir Gnuboard — versions 5.5.5, 5.5.6

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

gratis-herring-da5.notion.site/Gnuboard-Reflected-XSS-25d593d8a2b84a46a998bfd58… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-30050?: CVE-2022-30050 is a medium-severity vulnerability in Sir Gnuboard, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-05-16.
How severe is CVE-2022-30050?: Medium severity. CVSS v3 base score is 6.1 out of 10.