CVE-2021-27230

HIGHNVD 8.88.8—

8.8

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 v3: 8.8
EG Score: 8.8(medium)
EPSS: 76.6%
KEV: Not listed

Published

March 15, 2021

Last Modified

November 21, 2024

References (10)

cve@mitrehttp://karmainsecurity.com/KIS-2021-03
cve@mitrehttp://packetstormsecurity.com/files/161805/ExpressionEngine-6.0.2-PHP-Code-Injection.html
cve@mitrehttp://seclists.org/fulldisclosure/2021/Mar/32
cve@mitrehttps://expressionengine.com/features
cve@mitrehttps://hackerone.com/reports/1093444
af854a3a-2127-422b-91ae-364da2661108http://karmainsecurity.com/KIS-2021-03
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/161805/ExpressionEngine-6.0.2-PHP-Code-Injection.html
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2021/Mar/32
af854a3a-2127-422b-91ae-364da2661108https://expressionengine.com/features
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/1093444

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

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Frequently asked(5)

What is CVE-2021-27230?

CVE-2021-27230 is a high vulnerability published on March 15, 2021. 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.

When was CVE-2021-27230 disclosed?

CVE-2021-27230 was first published in the National Vulnerability Database on March 15, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-27230 actively exploited?

CVE-2021-27230 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 76.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-27230?

CVE-2021-27230 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2021-27230?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-27230, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-27230

📅 Published

🔄 Last Modified

🔗 References (10)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-27230?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (10)

Frequently asked(5)

Related CVEs(same CWE)