Vulnerability in Impresscms
CVE-2021-26600
ImpressCMS before 1.4.3 has plugins/preloads/autologin.php type confusion with resultant Authentication Bypass (!= instead of !==).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.056 (92.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.056 · newest: 0.056 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/1081986 (Exploit, Third Party Advisory)
- packetstormsecurity.com/files/166393/ImpressCMS-1.4.2-Authentication-Bypass.html (Exploit, VDB Entry, Third Party Advisory)
- seclists.org/fulldisclosure/2022/Mar/43 (Exploit, Mailing List, Third Party Advisory)
- karmainsecurity.com/KIS-2022-01 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-26600?
- CVE-2021-26600 is a critical-severity vulnerability in Impresscms, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 9.8/10. Published 2022-03-28.
- How severe is CVE-2021-26600?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-26600 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.