CVE-2026-45278

FAUCET Score

Nextcloud is an open source content collaboration platform. From version 6.1.0 to before version 8.2.2, an attacker can craft links that would redirect users to another website, when the victim uses the attackers link to log in via user OIDC. This issue has been patched in version 8.2.2.

First published: Jun 1, 2026Last modified: Jun 1, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 6.1.0, < 8.2.2CPE matchmatch criteria	cpe:2.3:a:nextcloud:user_oidc::::::::

CVSS Data

CVSS version used by this source: 3.1

3.3LOW

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

Exploitability Score

1.8

Impact Score

1.4

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.23%

Probability of exploitation in next 30 days

EPSS Percentile

14.2%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0023 is in the 15th percentile among its peer group of 26,221 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 0.1 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-8wjr-5cg8-4w73

Vendor Advisory

github.com / nextcloud/user_oidc/pull/1273

Issue TrackingPatch

hackerone.com / reports/3464925

Permissions Required