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Fencer Vulns
medium 6.5

CVE-2021-41843 json

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 a…

published 2021-12-17 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-28844

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
12.7%
EPSS 12.7% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

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.

Exploit prediction

12.65% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • trovent.io https://trovent.io/security-advisory-2109-01 referenced PoC, tagged "exploit" by a source, unverified
  • trovent.github.io https://trovent.github.io/security-advisories/TRSA-2109-01/TRSA-2109-01.txt referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/165301/OpenEMR-6.0.0-6.1.0-dev-SQL-Injection.html referenced PoC, tagged "exploit" by a source, unverified
  • seclists.org http://seclists.org/fulldisclosure/2021/Dec/38 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 6.8 AV:N/AC:L/Au:S/C:C/I:N/A:N

Classification

Weakness
  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.