What’s Vulnerable › Vulnerabilities

CVE-2017-5542

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-01-20 · updated 2026-06-17
• Weakness: CWE-79

Description

Cross-site scripting (XSS) vulnerability in template/usererror.missing_extension.php in Symphony CMS before 2.6.10 allows remote attackers to inject arbitrary web script or HTML via the existing-folder parameter.

Affected products

• Getsymphony Symphony: through 2.6.9

References

• http://www.securityfocus.com/bid/95686
• https://github.com/symphonycms/symphony-2/issues/2639
• https://github.com/symphonycms/symphony-2/releases/tag/2.6.10
• http://www.securityfocus.com/bid/95686
• https://github.com/symphonycms/symphony-2/issues/2639
• https://github.com/symphonycms/symphony-2/releases/tag/2.6.10

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