CVE-2021-33387
CVE-2021-33387 is a critical-severity vulnerability in 1234n Minicms with a CVSS 3.x base score of 9.6. 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-79.
Key facts
- Severity: Critical (CVSS 3.x base score 9.6)
- EPSS exploit prediction: 1% (53rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: 1234n Minicms
- Published:
- Last modified:
Description
Cross Site Scripting Vulnerability in MiniCMS v.1.10 allows attacker to execute arbitrary code via a crafted get request.
Frequently asked questions
- What is CVE-2021-33387?
- Cross Site Scripting Vulnerability in MiniCMS v.1.10 allows attacker to execute arbitrary code via a crafted get request.
- How severe is CVE-2021-33387?
- CVE-2021-33387 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-33387 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-33387?
- CVE-2021-33387 affects 1234n Minicms. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-33387?
- 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-2021-33387 published?
- CVE-2021-33387 was published on 2023-02-24 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:1234n:minicms:1.10:*:*:*:*:*:*:*
More vulnerabilities in 1234n Minicms
- CVE-2020-19896 — Critical (CVSS 9.8): File inclusion vulnerability in Minicms v1.9 allows remote attackers to execute arbitary PHP code via post-edit.php.
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- CVE-2018-18892 — Critical (CVSS 9.8): MiniCMS 1.10 allows execution of arbitrary PHP code via the install.php sitename parameter, which affects the site_name…
- CVE-2018-9092 — High (CVSS 8.8): There is a CSRF vulnerability in mc-admin/conf.php in MiniCMS 1.10 that can change the administrator account password.
- CVE-2022-33121 — High (CVSS 8.1): A Cross-Site Request Forgery (CSRF) in MiniCMS v1.11 allows attackers to arbitrarily delete local .dat files via…
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