Medium severity · published Jun 14, 2024
CVE-2024-37886
Nextcloud user_oidc's ID4me does not validate signature or expiration
4.7
CVSS
0.2%
EPSS
No
On KEV
Description
user_oidc app is an OpenID Connect user backend for Nextcloud. An attacker could potentially trick the app into accepting a request that is not signed by the correct server. It is recommended that the Nextcloud user_oidc app is upgraded to 1.3.5, 2.0.0, 3.0.0, 4.0.0 or 5.0.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
security-advisories · nextcloud
< 1.3.5 · source: vendor
UO
User Oidc · Nextcloud
before 1.3.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-37886
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-37886
Vendor Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vw5h-29xf-g55g
Issue Tracking
https://github.com/nextcloud/user_oidc/pull/715
Issue Tracking
https://hackerone.com/reports/1878391
More from security-advisories
9.8
CVE-2024-22212
Nextcloud global site selector authentication bypass
9.8
CVE-2023-49792
Bruteforce protection can be bypassed with misconfigured proxy
9.8
CVE-2022-31132
Unauthenticated SSRF in 3rd party module "cerdic/csstidy"
8.8
CVE-2026-45284
Nextcloud: Wrong condition in the User OIDC app's LdapService allowed deleted LDAP users to authenticate
8.2
CVE-2026-45545
Nextcloud: SQL Injection in Column Type Parameter Allows Arbitrary SQL Execution