What’s Vulnerable › Vulnerabilities

CVE-2020-16255

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-15 · updated 2026-06-17
• Weakness: CWE-79

Description

ownCloud (Core) before 10.5 allows XSS in login page 'forgot password.'

Affected products

• Owncloud: before 10.5 — fixed in 10.5

How to fix

Upgrade to a fixed version: Owncloud 10.5. Check the vendor advisory for mitigations.

References

• https://owncloud.com/security-advisories/reflected-xss-in-login-page-forgot-password-functionallity/
• https://owncloud.org/security/advisories/
• https://owncloud.com/security-advisories/reflected-xss-in-login-page-forgot-password-functionallity/
• https://owncloud.org/security/advisories/

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