How severe is CVE-2017-18502?

CVE-2017-18502 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-18502 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18502?

CVE-2017-18502 affects Bestwebsoft Subscriber. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18502?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-18502 published?

CVE-2017-18502 was published on 2019-08-12 and last updated on 2026-06-17.

CVE-2017-18502

CVE-2017-18502 is a medium-severity vulnerability in Bestwebsoft Subscriber with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Bestwebsoft Subscriber
Published: 2019-08-12
Last modified: 2026-06-17

Description

The subscriber plugin before 1.3.5 for WordPress has multiple XSS issues.

Frequently asked questions

What is CVE-2017-18502?: The subscriber plugin before 1.3.5 for WordPress has multiple XSS issues.
How severe is CVE-2017-18502?: CVE-2017-18502 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-18502 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18502?: CVE-2017-18502 affects Bestwebsoft Subscriber. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18502?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-18502 published?: CVE-2017-18502 was published on 2019-08-12 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:bestwebsoft:subscriber:*:*:*:*:*:wordpress:*:*

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