Medium severity · published Oct 27, 2026
CVE-2026-77173
A user could create a docx or odt file with a # in the filename with confidential information such as a credit card number and have it not be marked as confidential
New
4.3
CVSS
–
EPSS
No
On KEV
Description
A user could create a docx or odt file with a # in the filename with confidential information such as a credit card number and have it not be marked as confidential.
CVSS vector
CVSS:3.0/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?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FC
Files Confidential · Nextcloud
3.3.0 through 5.0.0 · source: vendor