What is CVE-2010-4264?

CVE-2010-4264 is a medium-severity vulnerability in Vanillaforums Vanilla Forums, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-06-22.

How severe is CVE-2010-4264?

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

XSS in Vanillaforums Vanilla Forums

CVE-2010-4264

It was found in vanilla forums before 2.0.10 a cross-site scripting vulnerability where a filename could contain arbitrary code to execute on the client side.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-06-22 · last modified 2026-06-16.

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 (49.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.6% 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

Vanillaforums Vanilla Forums
Vanilla Forums — versions vanilla forums before 2.0.10

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/vanilla/vanilla/commit/4535a059e4e24ca11a2ef0b4d754f262398bcece (Patch, Third Party Advisory)
seclists.org/oss-sec/2010/q4/282 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2010-4264?: CVE-2010-4264 is a medium-severity vulnerability in Vanillaforums Vanilla Forums, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-06-22.
How severe is CVE-2010-4264?: Medium severity. CVSS v3 base score is 6.1 out of 10.