What is CVE-2023-29376?

CVE-2023-29376 is a medium-severity vulnerability in Progress Sitefinity, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-04-10.

How severe is CVE-2023-29376?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Progress Sitefinity

CVE-2023-29376

An issue was discovered in Progress Sitefinity 13.3 before 13.3.7647, 14.0 before 14.0.7736, 14.1 before 14.1.7826, 14.2 before 14.2.7930, and 14.3 before 14.3.8025. There is potential XSS by privileged users in Sitefinity to media libraries.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-04-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (33.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Progress Sitefinity

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.progress.com/sitefinity-cms (Product)
community.progress.com/s/article/Sitefinity-Security-Advisory-for-Addressing-Se… (Vendor Advisory)

Frequently asked questions

What is CVE-2023-29376?: CVE-2023-29376 is a medium-severity vulnerability in Progress Sitefinity, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-04-10.
How severe is CVE-2023-29376?: Medium severity. CVSS v3 base score is 5.4 out of 10.