What’s Vulnerable › Vulnerabilities

CVE-2020-12432

• 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: yes
• Published: 2020-07-21 · updated 2026-06-17
• Weakness: CWE-79

Description

The WOPI API integration for Vereign Collabora CODE through 4.2.2 does not properly restrict delivery of JavaScript to a victim's browser, and lacks proper MIME type access control, which could lead to XSS that steals account credentials via cookies or local storage. The attacker must first obtain an API access token, which can be accomplished if the attacker is able to upload a .docx or .odt file. The associated API endpoints for exploitation are /wopi/files and /wopi/getAccessToken.

Affected products

• Collaboraoffice Collabora Online Development Edition: through 4.2.2

References

• https://github.com/d7x/CVE-2020-12432
• https://www.youtube.com/watch?v=_tkRnSr6yc0
• https://github.com/d7x/CVE-2020-12432
• https://www.youtube.com/watch?v=_tkRnSr6yc0

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