CVE-2021-26598

Name: CVE-2021-26598
Creator: NVD / NIST
Published: 2022-03-28T01:15:06.84+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 10.81%

Last modified Jun 17, 2026

CVE-2021-26598 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. ImpressCMS before 1.4.3 has Incorrect Access Control because include/findusers.php allows access by unauthenticated attackers (who are, by design, able to have a security token).. EPSS estimates a 10.81% chance of exploitation in the next 30 days.

Description

ImpressCMS before 1.4.3 has Incorrect Access Control because include/findusers.php allows access by unauthenticated attackers (who are, by design, able to have a security token).

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

10.81%

95.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Impresscms	Impresscms	< 1.4.3

References

http://karmainsecurity.com/KIS-2022-03Exploit, Third Party Advisory
http://seclists.org/fulldisclosure/2022/Mar/45Exploit, Mailing List, Third Party Advisory
https://hackerone.com/reports/1081137Exploit, Third Party Advisory
https://packetstormsecurity.com/files/166403/ImpressCMS-1.4.2-Incorrect-Access-Control.htmlExploit, Third Party Advisory, VDB Entry
http://karmainsecurity.com/KIS-2022-03Exploit, Third Party Advisory
http://seclists.org/fulldisclosure/2022/Mar/45Exploit, Mailing List, Third Party Advisory
https://hackerone.com/reports/1081137Exploit, Third Party Advisory
https://packetstormsecurity.com/files/166403/ImpressCMS-1.4.2-Incorrect-Access-Control.htmlExploit, Third Party Advisory, VDB Entry

Timeline

Published: Mar 28, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26598?

ImpressCMS before 1.4.3 has Incorrect Access Control because include/findusers.php allows access by unauthenticated attackers (who are, by design, able to have a security token).

How severe is CVE-2021-26598?

CVE-2021-26598 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 10.81% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26598?

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-2021-26598?

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

Scan your code now

Source: NVD / NIST