TI-2024-35183 Aliases CVE-2024-52512

Nextcloud User OIDC has an open redirection when logging in with User OIDC

LOW 28CWE-601Published 2024-11-15 · Updated 2024-11-15

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Spoofing
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-601.

Summary

user_oidc app is an OpenID Connect user backend for Nextcloud. A malicious user could send a malformed login link that would redirect the user to a provided URL after successfully authenticating. It is recommended that the Nextcloud User OIDC app is upgraded to 6.1.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00434 37th percentileScored 2026-11-07

Fix Fixed security-advisories (nextcloud): 6.1.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
nextcloud	security-advisories	6.0.0 to before 6.1.0	6.1.0	Patch available	CNA

security-advisories Vendornextcloud Affected 6.0.0 to before 6.1.0 Fixed in 6.1.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nextcloud:user_oidc::::::::	6.0.0 to before 6.1.0	Vulnerable	nextcloud

cpe:2.3:a:nextcloud:user_oidc:*:*:*:*:*:*:*:* Versions 6.0.0 to before 6.1.0 Vulnerable ·nextcloud

Remediation

Fix · CNA security-advisories (nextcloud) Fixed in 6.1.0

Timeline

2026-10-02 Threatist record created from CVE-2024-52512

References

Patch 1

https://github.com/nextcloud/user_oidc/commit/c923428d51972f6d04636c6accbecdec0c1b88e9

Advisory 2

Other 1

https://github.com/nextcloud/user_oidc/pull/961

TI-2023-15378 Nextcloud user_oidc app is missing brute force protection CVSS 3.1CRITICAL 9.8
TI-2026-33084 Nextcloud: Wrong condition in the User OIDC app's LdapService allowed deleted LDAP users to authenticate CVSS 3.1HIGH 8.8
TI-2023-20847 user_oidc app stores client secret unencrypted in database CVSS 3.1HIGH 8.1
TI-2024-24824 Nextcloud user_oidc app's ID4me feature is available even when disabled CVSS 3.1MEDIUM 6.3
TI-2026-33079 Nextcloud: Open Redirect in user_oidc login flow via protocol-relative URL bypass CVSS 3.1MEDIUM 6.1
TI-2024-25203 Nextcloud user_oidc's ID4me does not validate signature or expiration CVSS 3.1MEDIUM 5.4

See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences