CVE-2022-39338
Versions prior to 1.2.1 did not properly validate discovery urls which may lead to a stored cross site scripting attack vector.
Does this matter?
Lower severity and a low EPSS score (0.61%). Track it; it rarely justifies an emergency change on its own.
Description
user_oidc is an OpenID Connect user backend for Nextcloud. Versions prior to 1.2.1 did not properly validate discovery urls which may lead to a stored cross site scripting attack vector. The impact is limited due to the restrictive CSP that is applied on this endpoint. Additionally this vulnerability has only been shown to be exploitable in the Safari web browser. This issue has been addressed in version 1.2.1. Users are advised to upgrade. Users unable to upgrade should urge their users to avoid using the Safari web browser.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.61% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-79
- Affected
- nextcloud/openid connect user backend
- Source
- security-advisories@github.com
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5fpw-795h-rg57Third Party Advisory
- https://github.com/nextcloud/user_oidc/pull/496Patch, Third Party Advisory
- https://hackerone.com/reports/1687410Permissions Required, Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5fpw-795h-rg57Third Party Advisory
- https://github.com/nextcloud/user_oidc/pull/496Patch, Third Party Advisory
- https://hackerone.com/reports/1687410Permissions Required, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.