What’s Vulnerable › Vulnerabilities

CVE-2011-1133

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-11-05 · updated 2026-06-16
• Weakness: CWE-79

Description

Cross-Site Scripting (XSS) in Xinha, as included in the Serendipity package before 1.5.5, allows remote attackers to execute arbitrary code via plugins/ExtendedFileManager/backend.php.

Affected products

• s9y Serendipity: before 1.5.5 — fixed in 1.5.5

How to fix

Upgrade to a fixed version: s9y Serendipity 1.5.5. Check the vendor advisory for mitigations.

References

• https://blog.s9y.org/archives/224-Important-Security-Update-Serendipity-1.5.5-released.html
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=611661
• https://security-tracker.debian.org/tracker/CVE-2011-1133
• https://www.openwall.com/lists/oss-security/2011/03/02/5
• https://blog.s9y.org/archives/224-Important-Security-Update-Serendipity-1.5.5-released.html
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=611661
• https://security-tracker.debian.org/tracker/CVE-2011-1133
• https://www.openwall.com/lists/oss-security/2011/03/02/5

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