CVE-2023-41889

low-risk
Published 2023-09-15

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.

Do I need to act?

-
0.15% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Shirasagi

Affected Vendors

Ss-Proj

References (6)

Product https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334...
Exploit https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r
Exploit https://sim4n6.beehiiv.com/p/unicode-characters-bypass-security-checks
Product https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334...
Exploit https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r
Exploit https://sim4n6.beehiiv.com/p/unicode-characters-bypass-security-checks
27
/ 100
low-risk
Severity 21/34 · High
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal