{"answers":{"affected":"It affects 2 products.","exploited":"Yes. Attackers have exploited CVE-2026-19490 in the wild since at least 9 Sep 2026.","fix":"No fix has been published for CVE-2026-19490 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 12 Sep 2026.","what":"CVE-2026-19490 is a critical authentication bypass vulnerability in NetScaler ADC, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-19490 and fix it if it is affected.\n\nWhat it is: CVE-2026-19490 is a critical authentication bypass vulnerability in NetScaler ADC, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2026-19490 in the wild since at least 9 Sep 2026.\n\nAffected product: NetScaler ADC. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-19490/ (Markdown: https://insights.sbomify.com/CVE-2026-19490/index.md)","id":"CVE-2026-19490","markdown":"https://insights.sbomify.com/CVE-2026-19490/index.md","name":"CVE-2026-19490","record":{"aliases":["GHSA-7c6h-rhhv-wm8r"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"NetScaler ADC Gateway","requires_auth":"none","summary":"Attackers can bypass authentication in NetScaler ADC and Gateway, potentially gaining unauthorized access to the network infrastructure.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"NetScaler","cpe":[{"product":"netscaler_application_delivery_controller","vendor":"citrix"},{"product":"netscaler_gateway","vendor":"citrix"}],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","version":"4.0"},"cwes":[{"id":"CWE-288","name":"Authentication Bypass Using an Alternate Path or Channel"}],"description":"Vulnerability in NetScaler ADC and NetScaler Gateway.\n\nThis issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-02","github_poc":3,"max_poc_stars":19,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-02T15:43:53Z","kind":"github_poc","ref":"https://github.com/TarPeg007/CVE-2026-19490","stars":19,"title":"NetScaler ADC/Gateway SAML unsigned-assertion bypass via HTTP-Redirect binding (CTX696939) - root cause analysis + PoC"},{"date":"2026-09-10T15:13:03Z","kind":"github_poc","ref":"https://github.com/BishopFox/CVE-2026-19490-check","stars":1,"title":"Safely detect Citrix NetScaler SAML auth bypass CVE-2026-19490"},{"date":"2026-10-23T23:41:11Z","kind":"github_poc","ref":"https://github.com/CompleteTech-Security/netscaler-cve-2026-19490-check","stars":0,"title":"Offline NetScaler ADC / Gateway evidence checker for CVE-2026-19490. Reported firmware and configuration evidence. Standalone Python; JSON/CSV/HTML reports; no exploit payloads."}],"tier":"exploited"},"has_fix":null,"headline":"Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel","id":"CVE-2026-19490","indexable":true,"kev":{"dateAdded":"2026-09-09","dueDate":"2026-09-12","knownRansomwareCampaignUse":"Unknown","product":"NetScaler","requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","vendorProject":"Citrix","vulnerabilityName":"Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Security vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify Access","id":"CVE-2026-19491"},"packages":[],"prev":{"headline":"Memory corruption in ADC","id":"CVE-2026-19489"},"products":["ADC","Gateway"],"published":"2026-08-19","related":[{"cvss_score":9.8,"headline":"Citrix NetScaler ADC and NetScaler Gateway Code Injection","id":"CVE-2023-3519","kev_date_added":"2023-07-19","published":"2023-07-19"},{"cvss_score":9.5,"headline":"Citrix NetScaler Improper Input Validation","id":"CVE-2026-88771","kev_date_added":"2026-09-27","published":"2026-09-27"},{"cvss_score":9.5,"headline":"Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer","id":"CVE-2026-88772","kev_date_added":"2026-09-27","published":"2026-09-27"},{"cvss_score":9.4,"headline":"Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow","id":"CVE-2023-4966","kev_date_added":"2023-10-18","published":"2023-10-10"},{"cvss_score":9.3,"headline":"Citrix NetScaler Out-of-Bounds Read","id":"CVE-2026-3055","kev_date_added":"2026-03-30","published":"2026-03-23"},{"cvss_score":9.3,"headline":"Citrix NetScaler ADC and Gateway Out-of-Bounds Read","id":"CVE-2025-5777","kev_date_added":"2025-07-10","published":"2025-06-17"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-07","vendors":["NetScaler"]},"summary":"Attackers can bypass authentication in NetScaler ADC and Gateway, potentially gaining unauthorized access to the network infrastructure.","url":"https://insights.sbomify.com/CVE-2026-19490/"}