CVE-2026-45278 | BDVDB-2026-337100 Detail

nextcloudsecurity-advisories

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact low, availability impact none. Attack vector: local.

Weaknesses#

CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

References#

Exploit#

No public exploit known

History#

Version 12026-06-01Record published in the CVE List.
Version 22026-06-02Most recent update recorded in the CVE List.

Published

Published: 2026-06-01
Last modified: 2026-06-02

Vendor information

Vendor: nextcloud
Product: security-advisories

All nextcloud vulnerabilities

Score

3.3 Low

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 14.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 6.1.0, < 8.2.2
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

3.3 Low

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

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity	Low
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).