How severe is CVE-2019-9879?

CVE-2019-9879 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-9879 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 47% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9879?

CVE-2019-9879 affects Wpengine Wpgraphql. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9879?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-9879 published?

CVE-2019-9879 was published on 2019-06-10 and last updated on 2026-06-17.

CVE-2019-9879

CVE-2019-9879 is a critical-severity vulnerability in Wpengine Wpgraphql with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 47% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 47% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Wpengine Wpgraphql
Published: 2019-06-10
Last modified: 2026-06-17

Description

The WPGraphQL 0.2.3 plugin for WordPress allows remote attackers to register a new user with admin privileges, whenever new user registrations are allowed. This is related to the registerUser mutation.

Frequently asked questions

What is CVE-2019-9879?: The WPGraphQL 0.2.3 plugin for WordPress allows remote attackers to register a new user with admin privileges, whenever new user registrations are allowed. This is related to the registerUser mutation.
How severe is CVE-2019-9879?: CVE-2019-9879 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-9879 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 47% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9879?: CVE-2019-9879 affects Wpengine Wpgraphql. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9879?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-9879 published?: CVE-2019-9879 was published on 2019-06-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wpengine:wpgraphql:0.2.3:*:*:*:*:wordpress:*:*

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