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TI-2024-24824 Aliases CVE-2024-37312

Nextcloud user_oidc app's ID4me feature is available even when disabled

Priority LOW 29CWE-284Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

user_oidc app is an OpenID Connect user backend for Nextcloud. Missing access control on the ID4me endpoint allows an attacker to register an account eventually getting access to data that is available to all registered users. It is recommended that the OpenID Connect user backend is upgraded to 3.0.0 (Nextcloud 20-23), 4.0.0 (Nexcloud 24) or 5.0.0 (Nextcloud 25-28).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00637 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

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

VendorProductAffected versionsFixed inStatusSource
nextcloudsecurity-advisoriesup to 1.3.6—No fix listedCNA
  • security-advisories Vendornextcloud Affected up to 1.3.6 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nextcloud:user_oidc:*:*:*:*:*:*:*:*before 5.0.0Vulnerablenextcloud
  • cpe:2.3:a:nextcloud:user_oidc:*:*:*:*:*:*:*:* Versions before 5.0.0 Vulnerable ·nextcloud

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-37312
  2. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Exploit 1

Patch 1

Advisory 1

  • 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-2024-35183 Nextcloud User OIDC has an open redirection when logging in with User OIDC CVSS 3.1MEDIUM 6.1
  • 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