How severe is CVE-2017-18583?

CVE-2017-18583 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-2017-18583 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18583?

CVE-2017-18583 affects Post Pay Counter Project Post Pay Counter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18583?

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-2017-18583 published?

CVE-2017-18583 was published on 2019-08-22 and last updated on 2026-06-17.

CVE-2017-18583

CVE-2017-18583 is a critical-severity vulnerability in Post Pay Counter Project Post Pay Counter 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-74.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Post Pay Counter Project Post Pay Counter
Published: 2019-08-22
Last modified: 2026-06-17

Description

The post-pay-counter plugin before 2.731 for WordPress has PHP Object Injection.

Frequently asked questions

What is CVE-2017-18583?: The post-pay-counter plugin before 2.731 for WordPress has PHP Object Injection.
How severe is CVE-2017-18583?: CVE-2017-18583 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-2017-18583 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18583?: CVE-2017-18583 affects Post Pay Counter Project Post Pay Counter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18583?: 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-2017-18583 published?: CVE-2017-18583 was published on 2019-08-22 and last updated on 2026-06-17.

References

https://wordpress.org/plugins/post-pay-counter/#developers

Affected products (1)

cpe:2.3:a:post_pay_counter_project:post_pay_counter:*:*:*:*:*:wordpress:*:*

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