How severe is CVE-2018-12534?

CVE-2018-12534 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-2018-12534 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-12534?

CVE-2018-12534 affects Quick Chat Project Quick Chat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-12534?

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-2018-12534 published?

CVE-2018-12534 was published on 2018-06-18 and last updated on 2026-06-17.

CVE-2018-12534

CVE-2018-12534 is a critical-severity vulnerability in Quick Chat Project Quick Chat 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% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Quick Chat Project Quick Chat
Published: 2018-06-18
Last modified: 2026-06-17

Description

A SQL injection issue was discovered in the Quick Chat plugin before 4.00 for WordPress.

Frequently asked questions

What is CVE-2018-12534?: A SQL injection issue was discovered in the Quick Chat plugin before 4.00 for WordPress.
How severe is CVE-2018-12534?: CVE-2018-12534 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-2018-12534 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12534?: CVE-2018-12534 affects Quick Chat Project Quick Chat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-12534?: 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-2018-12534 published?: CVE-2018-12534 was published on 2018-06-18 and last updated on 2026-06-17.

References

https://wordpress.org/plugins/quick-chat/#developers

Affected products (1)

cpe:2.3:a:quick_chat_project:quick_chat:*:*:*:*:*:wordpress:*:*

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