How severe is CVE-2021-22892?

CVE-2021-22892 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-22892 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22892?

CVE-2021-22892 primarily affects Rocket.chat. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22892?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-22892 published?

CVE-2021-22892 was published on 2021-05-27 and last updated on 2026-06-17.

CVE-2021-22892

CVE-2021-22892 is a high-severity vulnerability in Rocket.chat with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-203.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Rocket.chat
Published: 2021-05-27
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2021-22892?: 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.
How severe is CVE-2021-22892?: CVE-2021-22892 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-22892 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22892?: CVE-2021-22892 primarily affects Rocket.chat. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22892?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-22892 published?: CVE-2021-22892 was published on 2021-05-27 and last updated on 2026-06-17.

References

https://hackerone.com/reports/1089116

Affected products (4)

cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:3.12.3:*:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:3.12.4:*:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:3.12.5:*:*:*:*:*:*:*

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