How severe is CVE-2011-4908?

CVE-2011-4908 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-2011-4908 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 56% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4908?

CVE-2011-4908 affects Tiny Tinybrowser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-4908?

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-2011-4908 published?

CVE-2011-4908 was published on 2020-02-12 and last updated on 2026-06-16.

CVE-2011-4908

CVE-2011-4908 is a critical-severity vulnerability in Tiny Tinybrowser with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 56% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 56% (99th 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

TinyBrowser plugin for Joomla! before 1.5.13 allows arbitrary file upload via upload.php.

Frequently asked questions

What is CVE-2011-4908?: TinyBrowser plugin for Joomla! before 1.5.13 allows arbitrary file upload via upload.php.
How severe is CVE-2011-4908?: CVE-2011-4908 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-2011-4908 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 56% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4908?: CVE-2011-4908 affects Tiny Tinybrowser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-4908?: 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-2011-4908 published?: CVE-2011-4908 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-2011-4906 — Critical (CVSS 9.8): Tiny browser in TinyMCE 3.0 editor in Joomla! before 1.5.13 allows file upload and arbitrary PHP code execution.

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