What is CVE-2021-45416?

CVE-2021-45416 is a medium-severity vulnerability in Rosariosis, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-02-01.

How severe is CVE-2021-45416?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-45416 known to be exploited?

13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Rosariosis

CVE-2021-45416

Reflected Cross-site scripting (XSS) vulnerability in RosarioSIS 8.2.1 allows attackers to inject arbitrary HTML via the search_term parameter in the modules/Scheduling/Courses.php script.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-02-01 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.023 (82.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000

Affected products

Rosariosis — versions 8.2.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
github.com/86x/CVE-2021-45416 (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-45416?: CVE-2021-45416 is a medium-severity vulnerability in Rosariosis, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-02-01.
How severe is CVE-2021-45416?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-45416 known to be exploited?: 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.