CVE-2023-28800 json
Output encoding missing in redrurl parameter
published 2023-06-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-32435
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
When using local accounts for administration, the redirect url parameter was not encoded correctly, allowing for an XSS attack providing admin login.
Patch / fix
- Zscaler Client Connector 3.9 Mac, 3.7 Win, 1.9.3 iOS, 1.10.2 Android, 1.10.1 Chrome OS, 1.4 Linux
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 23 mo ago
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- Zscaler Client Connector
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
help.zscaler.com
/zscaler-client-connector/client-connector-app-release-summary-2021?applicable_category=Windows&applicable_ver
release-notes
-
help.zscaler.com
/client-connector/client-connector-app-release-summary-2023?applicable_category=Chrome%20OS&applicable_version
release-notes
-
help.zscaler.com
/client-connector/client-connector-app-release-summary-2023?applicable_category=Android&applicable_version=1.1
release-notes
-
help.zscaler.com
/client-connector/client-connector-app-release-summary-2023?applicable_category=iOS&applicable_version=1.9.3&d
release-notes
-
help.zscaler.com
/client-connector/client-connector-app-release-summary-2022?applicable_category=Linux&applicable_version=1.4&d
release-notes
-
help.zscaler.com
/client-connector/client-connector-app-release-summary-2023?applicable_category=macOS&applicable_version=3.9&d
release-notes
Sources
- CVE List CVE-2023-28800
- NVD CVE-2023-28800
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