CVE-2020-8242
CVE-2020-8242 is a high-severity vulnerability in Expressionengine with a CVSS 3.x base score of 7.2. 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-89.
Key facts
- Severity: High (CVSS 3.x base score 7.2)
- CVSS v2: 6.5
- EPSS exploit prediction: 1% (56th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-89
- Affected product: Expressionengine
- Published:
- Last modified:
Description
Unsanitized user input in ExpressionEngine <= 5.4.0 control panel member creation leads to an SQL injection. The user needs member creation/admin control panel access to execute the attack.
Frequently asked questions
- What is CVE-2020-8242?
- Unsanitized user input in ExpressionEngine <= 5.4.0 control panel member creation leads to an SQL injection. The user needs member creation/admin control panel access to execute the attack.
- How severe is CVE-2020-8242?
- CVE-2020-8242 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-8242 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-8242?
- CVE-2020-8242 affects Expressionengine. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-8242?
- 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-2020-8242 published?
- CVE-2020-8242 was published on 2022-02-18 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:expressionengine:expressionengine:*:*:*:*:*:*:*:*
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- CVE-2020-13443 — High (CVSS 8.8): ExpressionEngine before 5.3.2 allows remote attackers to upload and execute arbitrary code in a .php%20 file via…
- CVE-2017-0897 — High (CVSS 7.5): ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with weak entropy.…
- CVE-2025-59473 — High (CVSS 7.2): SQL Injection vulnerability in the Structure for Admin authenticated user
All CVEs affecting Expressionengine →
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