CVE-2021-41402
CVE-2021-41402 is a high-severity vulnerability in Flatcore Flatcore-cms with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 6.5
- EPSS exploit prediction: 1% (68th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-94
- Affected product: Flatcore Flatcore-cms
- Published:
- Last modified:
Description
flatCore-CMS v2.0.8 has a code execution vulnerability, which could let a remote malicious user execute arbitrary PHP code.
Frequently asked questions
- What is CVE-2021-41402?
- flatCore-CMS v2.0.8 has a code execution vulnerability, which could let a remote malicious user execute arbitrary PHP code.
- How severe is CVE-2021-41402?
- CVE-2021-41402 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-41402 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-41402?
- CVE-2021-41402 affects Flatcore Flatcore-cms. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-41402?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-41402 published?
- CVE-2021-41402 was published on 2022-06-16 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:flatcore:flatcore-cms:2.0.8:*:*:*:*:*:*:*
More vulnerabilities in Flatcore Flatcore-cms
- CVE-2021-41403 — Critical (CVSS 9.8): flatCore-CMS version 2.0.8 calls dangerous functions, causing server-side request forgery vulnerabilities.
- CVE-2017-7878 — Critical (CVSS 9.8): SQL Injection vulnerability in flatCore version 1.4.6 allows an attacker to read and write to the users database.
- CVE-2017-7877 — High (CVSS 8.8): CSRF vulnerability in flatCore version 1.4.6 allows remote attackers to modify CMS configurations.
- CVE-2017-8868 — High (CVSS 7.5): acp/core/files.browser.php in flatCore 1.4.7 allows file deletion via directory traversal in the delete parameter to…
- CVE-2017-7879 — High (CVSS 7.5): SQL Injection vulnerability in flatCore version 1.4.6 allows an attacker to read the content database.
- CVE-2021-39608 — High (CVSS 7.2): Remote Code Execution (RCE) vulnerabilty exists in FlatCore-CMS 2.0.7 via the upload addon plugin, which could let a…
All CVEs affecting Flatcore Flatcore-cms →
Other CWE-94 (Code Injection) vulnerabilities
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- CVE-2026-53576 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter…
- CVE-2026-10561 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined…
- CVE-2026-25470 — Critical (CVSS 10.0): Improper Control of Generation of Code ('Code Injection') vulnerability in ACPT ACPT (Pro) - Custom Post Types Plugin…
- CVE-2026-48836 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Easy Invoice <= 2.1.19 versions.