What is CVE-2021-29399?

CVE-2021-29399 is a medium-severity vulnerability in Php, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-04-19.

How severe is CVE-2021-29399?

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

XSS in Php

CVE-2021-29399

XMB is vulnerable to cross-site scripting (XSS) due to inadequate filtering of BBCode input. This bug affects all versions of XMB. All XMB installations must be updated to versions 1.9.12.03 or 1.9.11.16.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (53.4th percentile) — read the EPSS interpretation.

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.

Affected products

Php — versions 5.0.0, 7.0.0, 8.0.0
Xmbforum2 Xmb
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-29399?: CVE-2021-29399 is a medium-severity vulnerability in Php, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-04-19.
How severe is CVE-2021-29399?: Medium severity. CVSS v3 base score is 6.1 out of 10.