How severe is CVE-2018-5668?

CVE-2018-5668 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-5668 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5668?

CVE-2018-5668 affects Read And Understood Project Read And Understood. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-5668?

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

When was CVE-2018-5668 published?

CVE-2018-5668 was published on 2018-01-13 and last updated on 2026-06-17.

CVE-2018-5668

CVE-2018-5668 is a medium-severity vulnerability in Read And Understood Project Read And Understood with a CVSS 3.x base score of 4.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Read And Understood Project Read And Understood
Published: 2018-01-13
Last modified: 2026-06-17

Description

An issue was discovered in the read-and-understood plugin 2.1 for WordPress. XSS exists via the wp-admin/options-general.php rnu_username_validation_title parameter.

Frequently asked questions

What is CVE-2018-5668?: An issue was discovered in the read-and-understood plugin 2.1 for WordPress. XSS exists via the wp-admin/options-general.php rnu_username_validation_title parameter.
How severe is CVE-2018-5668?: CVE-2018-5668 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-5668 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5668?: CVE-2018-5668 affects Read And Understood Project Read And Understood. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-5668?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-5668 published?: CVE-2018-5668 was published on 2018-01-13 and last updated on 2026-06-17.

References

https://github.com/d4wner/Vulnerabilities-Report/blob/master/read-and-understood.md

Affected products (1)

cpe:2.3:a:read_and_understood_project:read_and_understood:2.1:*:*:*:*:wordpress:*:*

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