CVE-2021-20845

CVE-2021-20845 is a high-severity vulnerability in Xml-sitemaps Unlimited Sitemap Generator 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

Description

Cross-site request forgery (CSRF) vulnerability in Unlimited Sitemap Generator versions prior to v8.2 allows a remote attacker to hijack the authentication of an administrator and conduct arbitrary operation via a specially crafted web page.

Frequently asked questions

What is CVE-2021-20845?
Cross-site request forgery (CSRF) vulnerability in Unlimited Sitemap Generator versions prior to v8.2 allows a remote attacker to hijack the authentication of an administrator and conduct arbitrary operation via a specially crafted web page.
How severe is CVE-2021-20845?
CVE-2021-20845 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-2021-20845 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20845?
CVE-2021-20845 affects Xml-sitemaps Unlimited Sitemap Generator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20845?
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-2021-20845 published?
CVE-2021-20845 was published on 2021-11-24 and last updated on 2026-06-17.

References

Affected products (1)

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