How severe is CVE-2011-4906?

CVE-2011-4906 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2011-4906 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4906?

CVE-2011-4906 affects Tiny Tinybrowser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-4906?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2011-4906 published?

CVE-2011-4906 was published on 2020-02-12 and last updated on 2026-06-16.

CVE-2011-4906

CVE-2011-4906 is a critical-severity vulnerability in Tiny Tinybrowser with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Tiny Tinybrowser
Published: 2020-02-12
Last modified: 2026-06-16

Description

Tiny browser in TinyMCE 3.0 editor in Joomla! before 1.5.13 allows file upload and arbitrary PHP code execution.

Frequently asked questions

What is CVE-2011-4906?: Tiny browser in TinyMCE 3.0 editor in Joomla! before 1.5.13 allows file upload and arbitrary PHP code execution.
How severe is CVE-2011-4906?: CVE-2011-4906 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2011-4906 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4906?: CVE-2011-4906 affects Tiny Tinybrowser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-4906?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2011-4906 published?: CVE-2011-4906 was published on 2020-02-12 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:tiny:tinybrowser:*:*:*:*:*:joomla\!:*:*

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CVE-2011-4908 — Critical (CVSS 9.8): TinyBrowser plugin for Joomla! before 1.5.13 allows arbitrary file upload via upload.php.

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