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CVE-2023-32074

30
FAUCET Score

CVE-2023-32074 is a critical authentication bypass vulnerability affecting the user_oidc app in Nextcloud, which serves as an OpenID Connect user backend. This flaw allows attackers to bypass authentication entirely, leading to complete compromise of confidentiality, integrity, and availability. With a CVSS score of 9.8 (CRITICAL) and a FAUCET Risk Score of 92/100, it presents a significant risk. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered substantial community discussion with 10 mentions, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.2CPE matchmatch criteria
cpe:2.3:a:nextcloud:user_oidc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.0HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 39th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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-x8mc-84wj-rf34
Vendor Advisory
github.com / nextcloud/user_oidc/pull/615
Issue TrackingPatch
hackerone.com / reports/1954711
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