Secuno
ENNL
Book demo

CVE-2021-47778

Get-simple Getsimplecms remote code execution

7.2 HIGHPublic exploitEPSS 1.26%
  1. Published21 Jan 2026

Description

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredHigh
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Get-simple Getsimplecms1.1.2

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-891079.9
SAP S/4HANA (Manage Substitution/Validation Rules) does not sufficiently validate input…
CVE-2026-961199.9
IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to obtain…
CVE-2026-821088.8
IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker…
CVE-2026-909209.8
IBM Maximo AI Service 9.1.0, and 9.2.0 could allow a remote attacker to execute…
CVE-2026-185378.7
IBM Maximo Application Suite - Location Service for Esri Component 9.2, 9.1, and 9.0 is…
CVE-2026-1093088.8
Craft CMS 4.0.0 before 4.18.7 and 5.0.0 before 5.10.14 passes the raw 'updates' request…

Frequently asked

Is CVE-2021-47778 being actively exploited?

CVE-2021-47778 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.26%.

How severe is CVE-2021-47778?

CVE-2021-47778 has a CVSS 3.1 base score of 7.2, rated high. EPSS estimates a 1.26% probability of exploitation.

Which products are affected by CVE-2021-47778?

Affected products include Get-simple Getsimplecms.

How do I fix CVE-2021-47778?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2021-47778 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.