CVE-2023-3519: Citrix ADC/Gateway XSS to RCE
Summary
Citrix ADC and Gateway allow cross-site scripting leading to remote code execution via crafted requests to the SAML endpoint.
Why It Matters
HIGH severity — known to be exploited in the wild（CISA KEV）；action required: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. ；affects Citrix ADC 13.0, Citrix ADC 13.1, Citrix Gateway 13.0 and more.
Current Status
- Vulnerability status: Known exploited (CISA KEV)
- Last intelligence update: 2026-10-27 · source: NVD
- CISA KEV added: 2023-07-19 · remediation deadline: 2023-08-09
Entity Activity Timeline
- 2023-07-19 — Added to CISA KEV as known-exploited · action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- 2023-07-18 — NVD publication / disclosure
- 2026-10-27 — Intelligence record updated（NVD sync）
Severity
HIGH
CVSS Score: 8.8
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Known Exploited (CISA KEV)
Known Exploited Vulnerability
Added: 2023-07-19 · Remediation deadline: 2023-08-09
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Source Attribution
Source: NVD · Updated: 2026-10-27T00:00:00.000 · Confidence: high
Impact
Based on CVSS vector: AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H — assess confidentiality, integrity, and availability impact via the official vector documentation.
Affected Software
- Citrix ADC 13.0 (Unknown)
- Citrix ADC 13.1 (Unknown)
- Citrix Gateway 13.0 (Unknown)
- Citrix Gateway 13.1 (Unknown)
Fix
Upgrade affected software to the fixed version identified above. Apply vendor patches and monitor advisories before exposed systems go unpatched.
Sources & Evidence
Export threat intelligence
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