XSS in Collaboraoffice Collabora Online Development Edition
CVE-2020-12432
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (57.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.youtube.com/watch (Exploit, Third Party Advisory)
- github.com/d7x/CVE-2020-12432 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-12432?
- CVE-2020-12432 is a medium-severity vulnerability in Collaboraoffice Collabora Online Development Edition, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-07-21.
- How severe is CVE-2020-12432?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2020-12432 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.