CVE-2021-20845 json
Cross-site request forgery (CSRF) vulnerability in Unlimited Sitemap Generator versions prior to v8.2 allows a remote attacker to hijack th…
published 2021-11-24 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8255
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- xml-sitemaps unlimited_sitemap_generator 8.2
Exploit prediction
0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- XML-Sitemaps Unlimited Sitemap Generator
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
xml-sitemaps.com
/standalone-google-sitemap-generator.html
product, vendor-advisory
-
xml-sitemaps.com
/news-20210831.html
release-notes, vendor-advisory
-
jvn.jp
/en/jp/JVN58407606/index.html
third-party-advisory
Sources
- CVE List CVE-2021-20845
- NVD CVE-2021-20845
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.