What is CVE-2021-44566?

CVE-2021-44566 is a medium-severity vulnerability in Rosariosis, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-02-24.

How severe is CVE-2021-44566?

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

XSS in Rosariosis

CVE-2021-44566

A Cross Site Scripting (XSS) vulnerability exists in RosarioSIS before 4.3 via the SanitizeMarkDown function in ProgramFunctions/MarkDownHTML.fnc.php.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-02-24 · 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: 0.007 (51.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Rosariosis

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

gitlab.com/francoisjacquet/rosariosis/-/issues/259 (Exploit, Patch, Third Party Advisory, Issue Tracking)
gitlab.com/francoisjacquet/rosariosis/-/commit/81886abb45a32e802151660de674f084… (Patch, Third Party Advisory)
gitlab.com/francoisjacquet/rosariosis/-/blob/mobile/CHANGES_V3_4.md (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2021-44566?: CVE-2021-44566 is a medium-severity vulnerability in Rosariosis, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-02-24.
How severe is CVE-2021-44566?: Medium severity. CVSS v3 base score is 5.4 out of 10.