What is CVE-2020-26763?

CVE-2020-26763 is a high-severity vulnerability in Rocket.chat. CVSS score: 7.5/10. Published 2021-07-05.

How severe is CVE-2020-26763?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Rocket.chat

CVE-2020-26763

The Rocket.Chat desktop application 2.17.11 opens external links without user interaction.

Published 2021-07-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.8th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Rocket.chat — versions 2.17.11

References

github.com/RocketChat/Rocket.Chat.Electron/pull/1710 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2020-26763?: CVE-2020-26763 is a high-severity vulnerability in Rocket.chat. CVSS score: 7.5/10. Published 2021-07-05.
How severe is CVE-2020-26763?: High severity. CVSS v3 base score is 7.5 out of 10.