How severe is CVE-2018-20988?

CVE-2018-20988 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-20988 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20988?

CVE-2018-20988 affects Google Forms Project Google Forms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20988?

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

When was CVE-2018-20988 published?

CVE-2018-20988 was published on 2019-08-22 and last updated on 2026-06-17.

CVE-2018-20988

CVE-2018-20988 is a high-severity vulnerability in Google Forms Project Google Forms with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Google Forms Project Google Forms
Published: 2019-08-22
Last modified: 2026-06-17

Description

The wpgform plugin before 0.94 for WordPress has eval injection in the CAPTCHA calculation.

Frequently asked questions

What is CVE-2018-20988?: The wpgform plugin before 0.94 for WordPress has eval injection in the CAPTCHA calculation.
How severe is CVE-2018-20988?: CVE-2018-20988 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-20988 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20988?: CVE-2018-20988 affects Google Forms Project Google Forms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20988?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-20988 published?: CVE-2018-20988 was published on 2019-08-22 and last updated on 2026-06-17.

References

https://wordpress.org/plugins/wpgform/#developers

Affected products (1)

cpe:2.3:a:google_forms_project:google_forms:*:*:*:*:*:wordpress:*:*

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