{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-5426 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-5426 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-5426 is a critical vulnerability in Digital Knowledge KnowledgeDeliver, published on 16 Apr 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-2026-5426 and fix it if it is affected.\n\nWhat it is: CVE-2026-5426 is a critical vulnerability in Digital Knowledge KnowledgeDeliver, published on 16 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-5426 in the wild and no public exploit code.\n\nAffected product: Digital Knowledge KnowledgeDeliver. 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-2026-5426/ (Markdown: https://insights.sbomify.com/CVE-2026-5426/index.md)","id":"CVE-2026-5426","markdown":"https://insights.sbomify.com/CVE-2026-5426/index.md","name":"CVE-2026-5426","record":{"aliases":["GHSA-g88c-8gfj-6c98"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"KnowledgeDeliver LMS","requires_auth":"none","summary":"Attackers can achieve remote code execution by exploiting a hard-coded ASP.NET machineKey to bypass ViewState validation in KnowledgeDeliver.","user_interaction":"not_required","vuln_class":"hardcoded_credentials"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mandiant","cpe":[],"cvss":{"score":9.1,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"},{"id":"CWE-321","name":"Use of Hard-coded Cryptographic Key"}],"description":"Hard-coded ASP.NET/IIS machineKey value in Digital Knowledge KnowledgeDeliver deployments prior to February 24, 2026 allows adversaries to circumvent ViewState validation mechanisms and achieve remote code execution via malicious ViewState deserialization attacks","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-05-26","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-05-26T07:08:21Z","kind":"github_poc","ref":"https://github.com/HORKimhab/CVE-2026-5426","stars":0,"title":"CVE-2026-5426"}],"tier":"poc_unverified"},"has_fix":null,"headline":"KnowledgeDeliver deployments before February 24, 2026 use a static ASP.NET/IIS machineKey value","id":"CVE-2026-5426","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"hardcoded_credentials","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Missing authorization in Kubio AI Page Builder","id":"CVE-2026-5427"},"packages":[],"prev":{"headline":"Widgets for Social Photo Feed \u003c= 1.7.9 - Unauthenticated Stored Cross-Site Scripting via feed_data","id":"CVE-2026-5425"},"products":["KnowledgeDeliver"],"published":"2026-04-16","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-27","vendors":["Digital Knowledge"]},"summary":"Attackers can achieve remote code execution by exploiting a hard-coded ASP.NET machineKey to bypass ViewState validation in KnowledgeDeliver.","url":"https://insights.sbomify.com/CVE-2026-5426/"}