How severe is CVE-2017-18563?

CVE-2017-18563 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-2017-18563 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18563?

CVE-2017-18563 affects Swimordiesoftware Rsvp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18563?

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

When was CVE-2017-18563 published?

CVE-2017-18563 was published on 2019-08-21 and last updated on 2026-06-17.

CVE-2017-18563

CVE-2017-18563 is a medium-severity vulnerability in Swimordiesoftware Rsvp 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: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Swimordiesoftware Rsvp
Published: 2019-08-21
Last modified: 2026-06-17

Description

The rsvp plugin before 2.3.8 for WordPress has persistent XSS via the note field on the attendee-list screen.

Frequently asked questions

What is CVE-2017-18563?: The rsvp plugin before 2.3.8 for WordPress has persistent XSS via the note field on the attendee-list screen.
How severe is CVE-2017-18563?: CVE-2017-18563 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-2017-18563 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18563?: CVE-2017-18563 affects Swimordiesoftware Rsvp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18563?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-18563 published?: CVE-2017-18563 was published on 2019-08-21 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:swimordiesoftware:rsvp:*:*:*:*:*:wordpress:*:*

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