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CVE-2021-41179

22
FAUCET Score

CVE-2021-41179 is a medium-severity vulnerability affecting Nextcloud Server versions prior to 20.0.13, 21.0.5, and 22.2.0. It allowed unauthenticated access to pages marked as public, bypassing two-factor authentication, particularly impacting Nextcloud Talk where private chat channels could be accessed. The vulnerability has a CVSS score of 6.5, indicating a network-based attack with low complexity, requiring low privileges, and resulting in high confidentiality impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 20.0.3, < 20.0.13CPE matchmatch criteria
cpe:2.3:a:nextcloud:server:*:*:*:*:*:*:*:*
>= 21.0.1, < 21.0.5CPE matchmatch criteria
cpe:2.3:a:nextcloud:server:*:*:*:*:*:*:*:*
>= 22.1.1, < 22.2.0CPE matchmatch criteria
cpe:2.3:a:nextcloud:server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.16%
Probability of exploitation in next 30 days
EPSS Percentile
63.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0116 is in the 78th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / nextcloud/security-advisories/security/advisories/GHSA-7hvh-rc6f-px23
Third Party Advisory
github.com / nextcloud/server/pull/28725
PatchThird Party Advisory
hackerone.com / reports/1322865
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