How severe is CVE-2021-23209?

CVE-2021-23209 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-2021-23209 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23209?

CVE-2021-23209 affects Ampforwp Accelerated Mobile Pages. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23209?

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

When was CVE-2021-23209 published?

CVE-2021-23209 was published on 2022-03-18 and last updated on 2026-06-17.

CVE-2021-23209

CVE-2021-23209 is a medium-severity vulnerability in Ampforwp Accelerated Mobile Pages 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% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ampforwp Accelerated Mobile Pages
Published: 2022-03-18
Last modified: 2026-06-17

Description

Multiple Authenticated (admin user role) Persistent Cross-Site Scripting (XSS) vulnerabilities discovered in AMP for WP – Accelerated Mobile Pages WordPress plugin (versions <= 1.0.77.32).

Frequently asked questions

What is CVE-2021-23209?: Multiple Authenticated (admin user role) Persistent Cross-Site Scripting (XSS) vulnerabilities discovered in AMP for WP – Accelerated Mobile Pages WordPress plugin (versions <= 1.0.77.32).
How severe is CVE-2021-23209?: CVE-2021-23209 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-2021-23209 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23209?: CVE-2021-23209 affects Ampforwp Accelerated Mobile Pages. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23209?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-23209 published?: CVE-2021-23209 was published on 2022-03-18 and last updated on 2026-06-17.

References

https://patchstack.com/database/vulnerability/accelerated-mobile-pages/wordpress-amp-for-wp-accelerated-mobile-pages-plugin-1-0-77-32-multiple-authenticated-persistent-cross-site-scripting-xss-vulnerabilities?_s_id=cve

Affected products (1)

cpe:2.3:a:ampforwp:accelerated_mobile_pages:*:*:*:*:*:wordpress:*:*

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