Medium severity · published Jun 1, 2026
CVE-2026-45544
Nextcloud: Information Disclosure of view filter metdata via Broken Sensitive Data Masking in ViewService
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
Nextcloud is an open source content collaboration platform. From version 0.8.0 to before version 1.0.4, the view filter criteria is exposed to users with read-only permissions in Nextcloud Tables. This issue has been patched in versions 1.0.4 and 2.0.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
security-advisories · nextcloud
>= 0.8.0, < 1.0.4 · source: vendor
TA
Tables · Nextcloud
0.8.0 before 1.0.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45544
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45544
Mitigation
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vvxm-6jjp-m9mp
Issue Tracking
https://github.com/nextcloud/tables/pull/2312
Permissions Required
https://hackerone.com/reports/3483753
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