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CVE-2021-26599

SQL Injection in ImpressCMS

9.8 CriticalPublic exploitFix available

ImpressCMS before 1.4.3 allows include/findusers.php groups SQL Injection.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

21.0%Up 20.0 points since Mar 28, 2022
90%50%10%1%

What each source reports

NVD Score used 9.8

ImpressCMS before 1.4.3 allows include/findusers.php groups SQL Injection.

Record
CVE-2021-26599
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-89
Updated
2026-11-02
CVE List No score

ImpressCMS before 1.4.3 allows include/findusers.php groups SQL Injection.

Record
CVE-2021-26599
Updated
2026-11-02
EUVDEUVD-2022-1455 No score

ImpressCMS before 1.4.3 allows include/findusers.php groups SQL Injection.

Record
EUVD-2022-1455
Updated
2026-11-03
GitHub AdvisoriesGHSA-jc4v-vvg6-xg78 9.8

SQL Injection in ImpressCMS

ImpressCMS before 1.4.3 allows include/findusers.php groups SQL Injection.

Record
GHSA-jc4v-vvg6-xg78
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-89
Updated
2026-11-02
OSV 9.8

ImpressCMS before 1.4.3 allows include/findusers.php groups SQL Injection.

Record
CVE-2021-26599
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-jc4v-vvg6-xg78 9.8

SQL Injection in ImpressCMS

ImpressCMS before 1.4.3 allows include/findusers.php groups SQL Injection.

Record
GHSA-jc4v-vvg6-xg78
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-89
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
impresscms/impresscms
Packagist
 before 1.4.3
1.4.3

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBImpressCMS 1.4.2 - Remote Code Execution (RCE)2022-03-30
NucleiImpressCMS < 1.4.3 - SQL Injection

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, Nuclei, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-26599 is a critical vulnerability (CVSS 9.8) in Impresscms, published March 28, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 21.0%, the 97th percentile. Fixed in impresscms/impresscms 1.4.3.

References

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