How severe is CVE-2021-24879?

CVE-2021-24879 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-24879 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24879?

CVE-2021-24879 affects Supportcandy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24879?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-24879 published?

CVE-2021-24879 was published on 2022-02-07 and last updated on 2026-06-17.

CVE-2021-24879

CVE-2021-24879 is a high-severity vulnerability in Supportcandy with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Supportcandy
Published: 2022-02-07
Last modified: 2026-06-17

Description

The SupportCandy WordPress plugin before 2.2.7 does not have CSRF check in the wpsc_tickets AJAX action, nor has any sanitisation or escaping in some of the filter fields which could allow attackers to make a logged in user having access to the ticket lists dashboard set an arbitrary filter (stored in their cookies) with an XSS payload in it.

Frequently asked questions

What is CVE-2021-24879?: The SupportCandy WordPress plugin before 2.2.7 does not have CSRF check in the wpsc_tickets AJAX action, nor has any sanitisation or escaping in some of the filter fields which could allow attackers to make a logged in user having access to the ticket lists dashboard set an arbitrary filter (stored in their cookies) with an XSS payload in it.
How severe is CVE-2021-24879?: CVE-2021-24879 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24879 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24879?: CVE-2021-24879 affects Supportcandy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24879?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-24879 published?: CVE-2021-24879 was published on 2022-02-07 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/6dfb4f61-c8cb-40ad-812f-139482be0fb4

Affected products (1)

cpe:2.3:a:supportcandy:supportcandy:*:*:*:*:*:wordpress:*:*

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