CVE-2021-3866 | BDVDB-2026-168293 Detail

zulipzulip/zulip

Description#

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

Impact#

Per CVSS v3.0: confidentiality impact high, integrity impact low, availability impact low. Attack vector: network.

Weaknesses#

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References#

Exploit#

No public exploit known

History#

Version 12022-01-20Record published in the CVE List.
Version 22024-08-03Most recent update recorded in the CVE List.

Published

Published: 2022-01-20
Last modified: 2024-08-03

Vendor information

Vendor: zulip
Product: zulip/zulip

All zulip vulnerabilities

Score

6.8 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 59.7.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Cross-Site Scripting

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
44f935695d452cc3fb16845a0c6af710438b153d
Fixed
Not stated
Vulnerable
< 3eb2791c3e9695f7d37ffe84e0c2184fae665cb6
Fixed
3eb2791c3e9695f7d37ffe84e0c2184fae665cb6

Scoring System

CVSS v4.0

Not available

CVSS v3.1

Not available

CVSS v3.0

6.8 Medium

CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:L

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	High
User Interaction	Required
Scope	Changed
Confidentiality	High
Integrity	Low
Availability	Low

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).