CVE-2020-12432

Name: CVE-2020-12432
Creator: NVD / NIST
Published: 2020-07-21T14:15:14.69+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.87%

Last modified Jun 17, 2026

CVE-2020-12432 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.87%

54.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Collaboraoffice	Collabora Online Development Edition	<= 4.2.2

References

https://github.com/d7x/CVE-2020-12432Exploit, Third Party Advisory
https://www.youtube.com/watch?v=_tkRnSr6yc0Exploit, Third Party Advisory
https://github.com/d7x/CVE-2020-12432Exploit, Third Party Advisory
https://www.youtube.com/watch?v=_tkRnSr6yc0Exploit, Third Party Advisory

Timeline

Published: Jul 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12432?

How severe is CVE-2020-12432?

CVE-2020-12432 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12432?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-12432?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST