CVE-2021-20749 json
Cross-site scripting vulnerability in Fudousan plugin ver5.7.0 and earlier, Fudousan Plugin Pro Single-User Type ver5.7.0 and earlier, and…
published 2021-06-28 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8163
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 62%
- public exploits
- 0
- none known
Summary
Cross-site scripting vulnerability in Fudousan plugin ver5.7.0 and earlier, Fudousan Plugin Pro Single-User Type ver5.7.0 and earlier, and Fudousan Plugin Pro Multi-User Type ver5.7.0 and earlier allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.
Patch / fix
- nendeb-biz.jp/2021-0617-1200/ advisory
Exploit prediction
0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- nendeb 'Fudousan plugin' series
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
nendeb-biz.jp
/2021-0617-1200/
patch, third-party-advisory
-
nendeb.jp
/fudou
product, third-party-advisory
-
jvn.jp
/en/jp/JVN93799513/index.html
third-party-advisory
Sources
- CVE List CVE-2021-20749
- NVD CVE-2021-20749
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