Auth bypass in Impresscms
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).
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.105 (95.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.105 · newest: 0.105 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/1081137 (Exploit, Third Party Advisory)
- packetstormsecurity.com/files/166403/ImpressCMS-1.4.2-Incorrect-Access-Control… (Exploit, VDB Entry, Third Party Advisory)
- karmainsecurity.com/KIS-2022-03 (Exploit, Third Party Advisory)
- seclists.org/fulldisclosure/2022/Mar/45 (Exploit, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-26598?
- CVE-2021-26598 is a medium-severity vulnerability in Impresscms, classified under Improper Authentication. CVSS score: 5.3/10. Published 2022-03-28.
- How severe is CVE-2021-26598?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-26598 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.