Medium severity5.4NVD Advisory· Published Jan 20, 2022· Updated Jun 17, 2026

CVE-2021-3866

Description

Cross-site Scripting (XSS) - Stored in GitHub repository zulip/zulip more than and including 44f935695d452cc3fb16845a0c6af710438b153d and prior to 3eb2791c3e9695f7d37ffe84e0c2184fae665cb6.

AI Insight

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

Affected products

Zulip/Zulip3 versions
cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*range: <=4.8
- (no CPE)range: before 3eb2791c3e9695f7d37ffe84e0c2184fae665cb6
- (no CPE)range: 44f935695d452cc3fb16845a0c6af710438b153d
GitHub/zulipllm-fuzzy
Range: before 3eb2791c3e9695f7d37ffe84e0c2184fae665cb6

Patches

Vulnerability mechanics

References

github.com/zulip/zulip/commit/3eb2791c3e9695f7d37ffe84e0c2184fae665cb6nvdPatchThird Party Advisory
huntr.dev/bounties/5f48dac5-e112-4b23-bbbf-cc00ba83bcf2nvdExploitThird Party Advisory
blog.zulip.com/2022/01/19/cve-2021-3866/nvdVendor Advisory

News mentions

No linked articles in our index yet.

cvss	0.351
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000