XSS in Rocket.chat
CVE-2020-15926
Rocket.Chat through 3.4.2 allows XSS where an attacker can send a specially crafted message to a channel or in a direct message to the client which results in remote code execution on the client side.
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: 0.028 (86.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/RocketChat/Rocket.Chat/commits/develop (Patch, Third Party Advisory)
- github.com/RocketChat/Rocket.Chat/pull/18356 (Patch, Third Party Advisory)
- blog.redteam.pl/2020/08/rocket-chat-xss-rce-cve-2020-15926.html (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15926?
- CVE-2020-15926 is a medium-severity vulnerability in Rocket.chat, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-08-18.
- How severe is CVE-2020-15926?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2020-15926 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.