CVE-2021-41843

Name: CVE-2021-41843
Creator: NVD / NIST
Published: 2021-12-17T04:15:38.81+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 13.65%

Last modified Jun 17, 2026

CVE-2021-41843 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An authenticated SQL injection issue in the calendar search function of OpenEMR 6.0.0 before patch 3 allows an attacker to read data from all tables of the database via the parameter provider_id, as demonstrated by the /interface/main/calendar/index.php?module=PostCalendar&func=search URI.. EPSS estimates a 13.65% chance of exploitation in the next 30 days.

Description

An authenticated SQL injection issue in the calendar search function of OpenEMR 6.0.0 before patch 3 allows an attacker to read data from all tables of the database via the parameter provider_id, as demonstrated by the /interface/main/calendar/index.php?module=PostCalendar&func=search URI.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

13.65%

96.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Open-Emr	Openemr	6.0.0

References

http://packetstormsecurity.com/files/165301/OpenEMR-6.0.0-6.1.0-dev-SQL-Injection.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2021/Dec/38Exploit, Mailing List, Third Party Advisory
https://trovent.github.io/security-advisories/TRSA-2109-01/TRSA-2109-01.txtExploit, Third Party Advisory
https://trovent.io/security-advisory-2109-01Exploit, Third Party Advisory
http://packetstormsecurity.com/files/165301/OpenEMR-6.0.0-6.1.0-dev-SQL-Injection.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2021/Dec/38Exploit, Mailing List, Third Party Advisory
https://trovent.github.io/security-advisories/TRSA-2109-01/TRSA-2109-01.txtExploit, Third Party Advisory
https://trovent.io/security-advisory-2109-01Exploit, Third Party Advisory

Timeline

Published: Dec 17, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41843?

How severe is CVE-2021-41843?

CVE-2021-41843 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 13.65% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41843?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-41843?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST