CVE-2021-20667 json
Stored cross-site scripting vulnerability due to inadequate CSP (Content Security Policy) configuration in GROWI versions v4.2.2 and earlie…
published 2021-03-10 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8085
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
Stored cross-site scripting vulnerability due to inadequate CSP (Content Security Policy) configuration in GROWI versions v4.2.2 and earlier allows remote authenticated attackers to inject an arbitrary script via a specially crafted content.
Exploit prediction
0.67% chance of exploitation in the next 30 days, higher than 52% 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
- WESEEK, Inc. GROWI
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
weseek.co.jp
/security/2021/03/08/vulnerability/growi-prevent-multiple-xss/
vendor-advisory
-
jvn.jp
/en/vu/JVNVU94889258/index.html
third-party-advisory
Sources
- CVE List CVE-2021-20667
- NVD CVE-2021-20667
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