Medium severity6.1NVD Advisory· Published Sep 21, 2021· Updated Jun 17, 2026

CVE-2021-20829

Description

Cross-site scripting vulnerability due to the inadequate tag sanitization in GROWI versions v4.2.19 and earlier allows remote attackers to execute an arbitrary script on the web browser of the user who accesses a specially crafted page.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Weseek/Growi2 versions
cpe:2.3:a:weseek:growi:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:weseek:growi:*:*:*:*:*:*:*:*range: <=4.2.19
- (no CPE)range: versions v4.2.19 and earlier
GROWI/GROWIllm-fuzzy
Range: <=v4.2.19

Patches

Vulnerability mechanics

References

jvn.jp/en/vu/JVNVU94889258/index.htmlnvdThird Party Advisory
weseek.co.jp/security/2021/09/17/vulnerability/growi-prevent-multiple-xss-addition/nvdVendor Advisory

News mentions

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cvss	0.397
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000