Vulnerability · Published Jun 1, 2026 · Assigned by GitHub_M
CVE-2026-45153Nextcloud: PIN bypass in PassCodeActivity via back button
Medium 4.6
In plain English
A medium-severity improper authentication in security-advisories from nextcloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Severity (CVSS 3.1)4.6Medium
Exploit odds (30 days)0.2%top 95.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Nextcloud is an open source content collaboration platform. From version 33.0.0 to before version 33.1.0, after unlocking a locked Android phone the back-button could be used to bypass the Nextcloud Files app PIN. This issue has been patched in version 33.1.0.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nextcloud | security-advisories | >= 33.0.0, < 33.1.0 |
Weakness: CWE-287 · Vector: CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2w7v-5299-3hw5 x_refsource_CONFIRM
- https://github.com/nextcloud/android/pull/16896 x_refsource_MISC
- https://hackerone.com/reports/3625210 x_refsource_MISC