An information disclosure vulnerability exists in the Rocket.Chat server fixed v3.13, v3.12.2 & v3.11.3 that allowed email addresses to be…

published 2021-05-27 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-10024

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.9%; EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits: 0; none known

An information disclosure vulnerability exists in the Rocket.Chat server fixed v3.13, v3.12.2 & v3.11.3 that allowed email addresses to be disclosed by enumeration and validation checks.

Patch / fix

fixed in 1

rocket.chat rocket.chat 3.11.3, 3.12.2

Exploit prediction

1.86% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

hackerone.com https://hackerone.com/reports/1089116 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

n/a Rocket.Chat server

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-203 Observable Discrepancy

References

hackerone.com /reports/1089116
exploit, third-party-advisory

Sources

CVE List CVE-2021-22892
NVD CVE-2021-22892

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary