What is CVE-2011-4912?

CVE-2011-4912 is a medium-severity vulnerability in Joomla Joomla\!, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 5.3/10. Published 2020-02-04.

How severe is CVE-2011-4912?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Joomla Joomla\!

CVE-2011-4912

Joomla! com_mailto 1.5.x through 1.5.13 has an automated mail timeout bypass.

Published 2020-02-04 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Joomla Joomla\!
Joomla! — versions All 1.5.x prior to and including 1.5.13

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

www.openwall.com/lists/oss-security/2011/12/25/9 (Mailing List, Third Party Advisory)
developer.joomla.org/security/news/303-20090723-core-com-mailto-timeout-issue.h… (Vendor Advisory)

Frequently asked questions

What is CVE-2011-4912?: CVE-2011-4912 is a medium-severity vulnerability in Joomla Joomla\!, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 5.3/10. Published 2020-02-04.
How severe is CVE-2011-4912?: Medium severity. CVSS v3 base score is 5.3 out of 10.