{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-54734 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-54734 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-54734 is a critical server-side request forgery vulnerability in prebid-server-java, published on 17 Sep 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-2026-54734 and fix it if it is affected.\n\nWhat it is: CVE-2026-54734 is a critical server-side request forgery vulnerability in prebid-server-java, published on 17 Sep 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-2026-54734 in the wild and no public exploit code.\n\nAffected product: prebid-server-java. 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-2026-54734/ (Markdown: https://insights.sbomify.com/CVE-2026-54734/index.md)","id":"CVE-2026-54734","markdown":"https://insights.sbomify.com/CVE-2026-54734/index.md","name":"CVE-2026-54734","record":{"aliases":["GHSA-fr2c-g2f8-qchg"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Prebid Server Java","requires_auth":"none","summary":"Attackers can force the server to make requests to internal services, potentially exposing sensitive data or bypassing network restrictions.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"description":"Prebid Server Java is the Java version of Prebid Server. Prior to 3.43.0, certain bidder adapters interpolate user-supplied parameters into outbound request URLs without using HttpUtil to validate the resulting domain or path segment. A malicious actor who can supply bid-request parameters can cause the server to send HTTP requests to unintended destinations, potentially reaching internal network services, metadata endpoints, or other sensitive server endpoints with the server's network access. This issue is fixed in version 3.43.0.","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":"Prebid Server Java: Vulnerability to request forgery allows for possible host environment data extraction","id":"CVE-2026-54734","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"prebid-server's request forgery vulnerability allows for possible host environment data extraction","id":"CVE-2026-54735"},"packages":[],"prev":{"headline":"moodle-local_o365: Authentication bypass via unverified JWT signature in Teams SSO endpoint","id":"CVE-2026-54733"},"products":["prebid-server-java"],"published":"2026-09-17","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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-18","vendors":["prebid"]},"summary":"Attackers can force the server to make requests to internal services, potentially exposing sensitive data or bypassing network restrictions.","url":"https://insights.sbomify.com/CVE-2026-54734/"}