How severe is CVE-2020-20300?

CVE-2020-20300 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-2020-20300 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-20300?

CVE-2020-20300 affects Weiphp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-20300?

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-2020-20300 published?

CVE-2020-20300 was published on 2020-12-18 and last updated on 2026-06-17.

CVE-2020-20300

CVE-2020-20300 is a critical-severity vulnerability in Weiphp with a CVSS 3.x base score of 9.8. 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-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Weiphp
Published: 2020-12-18
Last modified: 2026-06-17

Description

SQL injection vulnerability in the wp_where function in WeiPHP 5.0.

Frequently asked questions

What is CVE-2020-20300?: SQL injection vulnerability in the wp_where function in WeiPHP 5.0.
How severe is CVE-2020-20300?: CVE-2020-20300 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-2020-20300 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-20300?: CVE-2020-20300 affects Weiphp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-20300?: 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-2020-20300 published?: CVE-2020-20300 was published on 2020-12-18 and last updated on 2026-06-17.

References

https://github.com/Y4er/Y4er.com/blob/master/content/post/weiphp-exp-sql.md

Affected products (1)

cpe:2.3:a:weiphp:weiphp:5.0:*:*:*:*:*:*:*

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