CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NCVE-2023-41889
Medium (5.3) in ss-proj shirasagi. EPSS 0.7% chance of exploitation in the next 30 days.
SHIRASAGI is a Content Management System. Prior to version 1.18.0, SHIRASAGI is vulnerable to a Post-Unicode normalization issue. This happens when a logical validation or a security check is performed before a Unicode normalization. The Unicode character equivalent of a character would resurface after the normalization. The fix is initially performing the Unicode normalization and then strip for all whitespaces and then checking for a blank string. This issue has been fixed in version 1.18.0.
Severity
- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-116, CWE-176
- Published
- Modified
- Record from
- the NVD, synced
Affected
- ss-proj:shirasagi
References
- https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334c3ea/app/models/concerns/rdf/object.rb#L68-L72
- https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r
- https://sim4n6.beehiiv.com/p/unicode-characters-bypass-security-checks
- https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334c3ea/app/models/concerns/rdf/object.rb#L68-L72
- https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r