CVE-2021-41843 SQL injection in n/a
An authenticated attacker can exploit SQL injection in the calendar search function to read data from all database tables.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-41843?
CVE-2021-41843 is a medium-severity SQL injection vulnerability in Open-Emr Openemr, published on 17 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-89
Which versions are affected by CVE-2021-41843?
It affects 1 product.
Products include Open-Emr Openemr.
How do I fix CVE-2021-41843?
No fix has been published for CVE-2021-41843 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2021-41843 being exploited?
There is no known exploitation of CVE-2021-41843 in the wild and no public exploit code.
Other vulnerabilities in Open-Emr Openemr
- CVE-2026-24898 OpenEMR has an Unauthenticated MedEx Token Disclosure
- CVE-2026-24849 OpenEMR Arbitrary File Read Vulnerability
- CVE-2026-24908 OpenEMR has SQL Injection in Patient API Sort Parameter
- CVE-2022-2734 Improper Restriction of Rendered UI Layers or Frames in openemr/openemr
- CVE-2024-22611 SQL injection in n/a
Sources
Also known as GHSA-qfp4-p59q-5c6x.