CVE-2021-26599
CVE-2021-26599 is a critical-severity vulnerability in Impresscms with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 19% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-89.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 19% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-89
- Affected product: Impresscms
- Published:
- Last modified:
Description
ImpressCMS before 1.4.3 allows include/findusers.php groups SQL Injection.
Frequently asked questions
- What is CVE-2021-26599?
- ImpressCMS before 1.4.3 allows include/findusers.php groups SQL Injection.
- How severe is CVE-2021-26599?
- CVE-2021-26599 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-26599 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-26599?
- CVE-2021-26599 affects Impresscms. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-26599?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-26599 published?
- CVE-2021-26599 was published on 2022-03-28 and last updated on 2026-06-17.
References
- http://karmainsecurity.com/KIS-2022-04
- http://packetstormsecurity.com/files/166404/ImpressCMS-1.4.2-SQL-Injection.html
- http://seclists.org/fulldisclosure/2022/Mar/46
- https://hackerone.com/reports/1081145
Affected products (1)
- cpe:2.3:a:impresscms:impresscms:*:*:*:*:*:*:*:*
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