CVE-2021-47778

HIGHNVD 7.27.2—Elevated

7.2

GetSimple CMS My SMTP Contact Plugin 1.1.2 contains a PHP code injection vulnerability. An authenticated administrator can inject arbitrary PHP code through plugin configuration parameters, leading to remote code execution on the server.

CVSS v3: 7.2
EG Score: 7.2(medium)
EPSS: 81.1%
KEV: Not listed

Published

January 21, 2026

Last Modified

March 6, 2026

References (5)

disclosure@vulncheckhttp://get-simple.info
disclosure@vulncheckhttps://github.com/GetSimpleCMS/GetSimpleCMS
disclosure@vulncheckhttps://github.com/boku7/gsSMTP-Csrf2Xss2RCE/
disclosure@vulncheckhttps://www.exploit-db.com/exploits/49774
disclosure@vulncheckhttps://www.vulncheck.com/advisories/getsimple-cms-my-smtp-contact-plugin-php-code-injection

Weakness Classification(1)

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

CWE-94Improper Control of Generation of Code (Code Injection)

Data Freshness Timeline

(refreshed 13× in last 7d / 18× 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.

2026-06-06 13:46 UTCepss_batch
2026-06-06 13:46 UTCepss_batch
2026-06-05 22:45 UTCepss_batch
2026-06-05 22:45 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-29 13:41 UTCEG score recompute
2026-05-29 13:41 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-47778?

CVE-2021-47778 is a high vulnerability published on January 21, 2026. GetSimple CMS My SMTP Contact Plugin 1.1.2 contains a PHP code injection vulnerability. An authenticated administrator can inject arbitrary PHP code through plugin configuration parameters, leading to remote code execution on the server.

When was CVE-2021-47778 disclosed?

CVE-2021-47778 was first published in the National Vulnerability Database on January 21, 2026, with the most recent update on March 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-47778 actively exploited?

CVE-2021-47778 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 81.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-47778?

CVE-2021-47778 has a CVSS v3 base score of 7.2 (NVD).

How do I remediate CVE-2021-47778?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47778, 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-2021-47778

📅 Published

🔄 Last Modified

🔗 References (5)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-47778?

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Published

Last Modified

References (5)

Frequently asked(5)

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