CVE-2011-5133

CVE-2011-5133 is a critical-severity vulnerability in Mybb with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Unspecified vulnerability in MyBB before 1.6.5 has unknown impact and attack vectors, related to an "unparsed user avatar in the buddy list."

Frequently asked questions

What is CVE-2011-5133?
Unspecified vulnerability in MyBB before 1.6.5 has unknown impact and attack vectors, related to an "unparsed user avatar in the buddy list."
How severe is CVE-2011-5133?
CVE-2011-5133 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2011-5133 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-5133?
CVE-2011-5133 primarily affects Mybb. In total, 50 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-5133?
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-2011-5133 published?
CVE-2011-5133 was published on 2012-08-30 and last updated on 2026-06-16.

References

Affected products (50)

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