CVE-2021-27230
HIGHCVSS 8.8/10EPSS 2.83%
Last modified
CVE-2021-27230 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. ExpressionEngine before 5.4.2 and 6.x before 6.0.3 allows PHP Code Injection by certain authenticated users who can leverage Translate::save() to write to an _lang.php file under the system/user/language directory.. EPSS estimates a 2.83% chance of exploitation in the next 30 days.
Description
ExpressionEngine before 5.4.2 and 6.x before 6.0.3 allows PHP Code Injection by certain authenticated users who can leverage Translate::save() to write to an _lang.php file under the system/user/language directory.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Expressionengine | Expressionengine | < 5.4.2 |
| Expressionengine | Expressionengine | >= 6.0.0, < 6.0.3 |
References
- http://karmainsecurity.com/KIS-2021-03Exploit, Third Party Advisory
- http://packetstormsecurity.com/files/161805/ExpressionEngine-6.0.2-PHP-Code-Injection.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2021/Mar/32Mailing List, Third Party Advisory
- https://expressionengine.com/featuresVendor Advisory
- https://hackerone.com/reports/1093444Permissions Required, Third Party Advisory
- http://karmainsecurity.com/KIS-2021-03Exploit, Third Party Advisory
- http://packetstormsecurity.com/files/161805/ExpressionEngine-6.0.2-PHP-Code-Injection.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2021/Mar/32Mailing List, Third Party Advisory
- https://expressionengine.com/featuresVendor Advisory
- https://hackerone.com/reports/1093444Permissions Required, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-27230?
ExpressionEngine before 5.4.2 and 6.x before 6.0.3 allows PHP Code Injection by certain authenticated users who can leverage Translate::save() to write to an _lang.php file under the system/user/language directory.
How severe is CVE-2021-27230?
CVE-2021-27230 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.83% probability of exploitation in the next 30 days.
How do I fix CVE-2021-27230?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-27230?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST