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Vulnerability record · CVE-2021-27230 · published 15 March 2021

CVE-2021-27230: Expressionengine code injection vulnerability

Expressionengine · Expressionengine

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.

8.8 CVSS 3.1 High EPSS 2.8% · top 13.9% CWE-94 · Code injection
8.8CVSS 3.1 base score, v2 6.5
2.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 4 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://karmainsecurity.com/KIS-2021-03 ExploitThird Party Advisory
http://packetstormsecurity.com/files/161805/ExpressionEngine-6.0.2-PHP-Code-Injection.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2021/Mar/32 Mailing ListThird Party Advisory
https://expressionengine.com/features Vendor Advisory
https://hackerone.com/reports/1093444 Permissions RequiredThird Party Advisory
http://karmainsecurity.com/KIS-2021-03 ExploitThird Party Advisory
http://packetstormsecurity.com/files/161805/ExpressionEngine-6.0.2-PHP-Code-Injection.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2021/Mar/32 Mailing ListThird Party Advisory
https://expressionengine.com/features Vendor Advisory
https://hackerone.com/reports/1093444 Permissions RequiredThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-33199Expressionengine improper input validation vulnerabilityIn Expression Engine before 6.0.3, addonIcon in Addons/file/mod.file.php relies on the untrusted input value of input->get('file') instead of the fix…EPSS 1.4%8.8CVE-2023-22953Expressionengine vulnerabilityIn ExpressionEngine before 7.2.6, remote code execution can be achieved by an authenticated Control Panel user.EPSS 1.4%8.8CVE-2020-13443Expressionengine unrestricted file upload vulnerabilityExpressionEngine before 5.3.2 allows remote attackers to upload and execute arbitrary code in a .php%20 file via Compose Msg, Add attachment, and Sav…EPSS 4.1%7.5CVE-2017-0897Expressionengine vulnerabilityExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with weak entropy. Successfully guessing the token can l…EPSS 4.0%7.2CVE-2025-59473Expressionengine sql injection vulnerabilitySQL Injection vulnerability in the Structure for Admin authenticated userEPSS 0.30%7.2CVE-2020-8242Expressionengine sql injection vulnerabilityUnsanitized user input in ExpressionEngine <= 5.4.0 control panel member creation leads to an SQL injection. The user needs member creation/admin con…EPSS 0.93%6.5CVE-2014-5387Ellislab expressionengine sql injection vulnerabilityMultiple SQL injection vulnerabilities in EllisLab ExpressionEngine before 2.9.1 allow remote authenticated users to execute arbitrary SQL commands v…EPSS 1.6%6.1CVE-2024-38454Expressionengine cross-site scripting vulnerabilityExpressionEngine before 7.4.11 allows XSS.EPSS 0.30%

Source: NIST National Vulnerability Database (record CVE-2021-27230), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.