CVE-2020-8191
Improper input validation in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 allows reflected Cross Site Scripting (XSS).
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 23.5%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
Improper input validation in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 allows reflected Cross Site Scripting (XSS).
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 23.46% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- citrix/application delivery controller firmware · citrix/netscaler gateway firmware · citrix/gateway firmware · citrix/sd-wan wanop
- Source
- support@hackerone.com
EPSS moved from 23.5% on 17 October 2026 to 23.5% on 3 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://support.citrix.com/article/CTX276688Vendor Advisory
- https://support.citrix.com/article/CTX276688Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.