CVE-2021-45416

mediumpriority · track · 35EPSS 0.023 · 83 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · PoC

Likely / severe?

2.33% (83rd) EPSS

CVSS 4.3 · medium

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-29

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.

cvss

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79US

exploits (2)

Public proof-of-concept and weaponised exploit code.

affected products (3)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
rosariosis rosariosis= 8.2.1nvdUScpe:2.3:a:rosariosis:rosariosis:*:*:*:*:*:*:*:*
Packagist francoisjacquet/rosariosis< 8.3osvUSpkg:composer/francoisjacquet/rosariosis

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-287r-574x-f4h4RosarioSIS XSS Vulnerability2022-02-02ghsa · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2022-02-01modified 2026-07-09

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+53185 more

references (5)

External citations — patches, advisories, analysis.

http://rosariosis.com cnnvd
https://github.com/86x/CVE-2021-45416 cnnvd
https://nvd.nist.gov/vuln/detail/CVE-2021-45416 cnnvd
https://github.com/86x/CVE-2021-45416 enisa_euvd
https://github.com/86x/CVE-2021-45416ExploitPatchThird Party Advisorynvd

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