Is CVE-2021-37630 in the CISA KEV catalog?

No. CVE-2021-37630 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-37630?

CVE-2021-37630 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2021-37630?

CVE-2021-37630 has an EPSS score of 1.20% (64th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-37630?

Upgrade circles to 0.21.4 or later.

CVE & CISA-KEV Catalog

CVE-2021-37630

MEDIUM

6.5

CVSS v3

NVD

Description

Nextcloud Circles is an open source social network built for the nextcloud ecosystem. In affected versions the Nextcloud Circles application allowed any user to join any "Secret Circle" without approval by the Circle owner leaking private information. It is recommended that Nextcloud Circles is upgraded to 0.19.15, 0.20.11 or 0.21.4. There are no workarounds for this issue.

CWE-639Authorization Bypass Through User-Controlled Key

How to fix

Remediation Available

circlesNVD

Affected:>= 0.21.0, < 0.21.4Fixed in:0.21.4CVE-2021-37630derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

1.20%probability of exploitation in 30 days

64thpercentile

Moderate risk: more likely to be exploited than 64% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory2

Related Vulnerabilities

Other CWE-639 (Authorization Bypass Through User-Controlled Key) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-6875	Critical	9.8	90%	-	-
CVE-2024-46982	High	7.5	61%	-	Fix
CVE-2021-45428	Critical	9.8	57%	-	-
CVE-2019-17382	Critical	9.1	54%	-	Fix
CVE-2019-13360	Critical	9.8	24%	-	-
CVE-2023-48783	Medium	5.4	22%	-	Fix

Embed a live status badge for CVE-2021-37630

Markdown

[![CVE-2021-37630](https://tridentstack.com/cve/badge/CVE-2021-37630.svg)](https://tridentstack.com/cve/CVE-2021-37630)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-37630"><img src="https://tridentstack.com/cve/badge/CVE-2021-37630.svg" alt="CVE-2021-37630"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.