How severe is CVE-2018-21013?

CVE-2018-21013 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-2018-21013 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-21013?

CVE-2018-21013 affects Upperthemes Swape. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-21013?

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-2018-21013 published?

CVE-2018-21013 was published on 2019-09-09 and last updated on 2026-06-17.

CVE-2018-21013

CVE-2018-21013 is a critical-severity vulnerability in Upperthemes Swape 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-269.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Upperthemes Swape
Published: 2019-09-09
Last modified: 2026-06-17

Description

The Swape theme before 1.2.1 for WordPress has incorrect access control, as demonstrated by allowing new administrator accounts via vectors involving xmlPath to wp-admin/admin-ajax.php.

Frequently asked questions

What is CVE-2018-21013?: The Swape theme before 1.2.1 for WordPress has incorrect access control, as demonstrated by allowing new administrator accounts via vectors involving xmlPath to wp-admin/admin-ajax.php.
How severe is CVE-2018-21013?: CVE-2018-21013 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-2018-21013 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-21013?: CVE-2018-21013 affects Upperthemes Swape. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-21013?: 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-2018-21013 published?: CVE-2018-21013 was published on 2019-09-09 and last updated on 2026-06-17.

References

https://wpvulndb.com/vulnerabilities/9024

Affected products (1)

cpe:2.3:a:upperthemes:swape:*:*:*:*:*:wordpress:*:*

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