CVE-2026-45282Nextcloud: Logged-in user bypasses share password and download restrictions on Text attachments via documentId leads to unauthorized file access
Updated under an hour ago ()
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It affects nextcloud security-advisories and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, an authenticated attacker can access attachments of link shares when knowing the share token, circumventing password protection or download restrictions. It is applicable to any file that is shared directly, as the attacker only needs to know a documentId they own, apart of the mentioned share token. For shared folders the attacker has to know or guess a documentId of a file that is included inside the folder, making it much harder to exploit. The attacker can only extract an attachments, but not the file shared file or folder itself. It is recommended that the Nextcloud Server is upgraded to 33.0.3 or 32.0.9. It is recommended that the Nextcloud Enterprise Server is upgraded to 33.0.3, 32.0.9, 31.0.14.5, 30.0.17.9, 29.0.16.16, 28.0.14.17 or 27.1.11.5
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-284
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Jun 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
nextcloud security-advisories nextcloud:security_advisories (from the name) | from 32.0.0, < 32.0.9; from 33.0.0, < 33.0.3 | CNA record |
nextcloud nextcloud_server nextcloud:nextcloud_server | from 32.0.0 before 32.0.9; from 33.0.0 before 33.0.3; from 27.0.0 before 27.1.11.5; from 28.0.0 before 28.0.14.17; from 29.0.0 before 29.0.16.16; from 30.0.0 before 30.0.17.9; from 31.0.0 before 31.0.14.5; from 32.0.0 before 32.0.9; and 1 more ranges | NVD |
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-35fx-69q6-xpjrx-refsource-confirm, mitigation, vendor-advisory
- https://github.com/nextcloud/text/pull/8499x-refsource-misc, issue-tracking, patch
- https://hackerone.com/reports/3577244x-refsource-misc, permissions-required
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.