How severe is CVE-2021-24980?

CVE-2021-24980 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-2021-24980 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24980?

CVE-2021-24980 affects Gwolle Guestbook Project Gwolle Guestbook. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24980?

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

When was CVE-2021-24980 published?

CVE-2021-24980 was published on 2021-12-27 and last updated on 2026-06-17.

CVE-2021-24980

CVE-2021-24980 is a medium-severity vulnerability in Gwolle Guestbook Project Gwolle Guestbook 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% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Gwolle Guestbook Project Gwolle Guestbook
Published: 2021-12-27
Last modified: 2026-06-17

Description

The Gwolle Guestbook WordPress plugin before 4.2.0 does not sanitise and escape the gwolle_gb_user_email parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue in an admin page

Frequently asked questions

What is CVE-2021-24980?: The Gwolle Guestbook WordPress plugin before 4.2.0 does not sanitise and escape the gwolle_gb_user_email parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue in an admin page
How severe is CVE-2021-24980?: CVE-2021-24980 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-2021-24980 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24980?: CVE-2021-24980 affects Gwolle Guestbook Project Gwolle Guestbook. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24980?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24980 published?: CVE-2021-24980 was published on 2021-12-27 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/e50bcb39-9a01-433f-81b3-fd4018672b85

Affected products (1)

cpe:2.3:a:gwolle_guestbook_project:gwolle_guestbook:*:*:*:*:*:wordpress:*:*

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