{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-123538 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-123538 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-123538 is a high-severity vulnerability in OpenIdentityPlatform OpenAM, published on 8 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-123538 and fix it if it is affected.\n\nWhat it is: CVE-2026-123538 is a high-severity vulnerability in OpenIdentityPlatform OpenAM, published on 8 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-123538 in the wild and no public exploit code.\n\nAffected product: OpenIdentityPlatform OpenAM. 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-2026-123538/ (Markdown: https://insights.sbomify.com/CVE-2026-123538/index.md)","id":"CVE-2026-123538","markdown":"https://insights.sbomify.com/CVE-2026-123538/index.md","name":"CVE-2026-123538","record":{"aliases":["GHSA-9cfm-rxfw-m9h6","GHSA-j56q-q3r3-hg7f"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"}],"description":"OpenAM before 16.1.4 does not verify that a signed SAML 1.x assertion or response was signed by the partner named as its issuer, accepting a signature from any certificate in OpenAM's keystore. An attacker holding such a private key, such as a trusted SAML 1.x partner, can forge assertions claiming another partner's issuer and sign in as that partner's users, including privileged ones.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"OpenAM before 16.1.4 SAML 1.x Signature Verification Issuer Impersonation","id":"CVE-2026-123538","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"OpenAM before 16.1.4 Stored XSS via OAuth 2.0 Consent Page Display Name","id":"CVE-2026-123539"},"nickname":null,"packages":[],"prev":{"headline":"OpenAM before 16.1.4 SSRF via UMA Scope Description URLs","id":"CVE-2026-123537"},"products":["OpenAM"],"published":"2026-11-08","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)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-11-09","vendors":["OpenIdentityPlatform"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-123538/"}