How severe is CVE-2020-8521?

CVE-2020-8521 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-2020-8521 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-2020-8521?

CVE-2020-8521 affects Phpzag. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-8521?

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-2020-8521 published?

CVE-2020-8521 was published on 2020-07-07 and last updated on 2026-06-17.

CVE-2020-8521

CVE-2020-8521 is a critical-severity vulnerability in Phpzag 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: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Phpzag
Published: 2020-07-07
Last modified: 2026-06-17

Description

SQL injection with start and length parameters in Records.php for phpzag live add edit delete data tables records with ajax php mysql

Frequently asked questions

What is CVE-2020-8521?: SQL injection with start and length parameters in Records.php for phpzag live add edit delete data tables records with ajax php mysql
How severe is CVE-2020-8521?: CVE-2020-8521 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-2020-8521 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-2020-8521?: CVE-2020-8521 affects Phpzag. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-8521?: 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-2020-8521 published?: CVE-2020-8521 was published on 2020-07-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:phpzag:phpzag:-:*:*:*:*:*:*:*

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