{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5538 exists.","fix":"No fix has been published for CVE-2026-5538 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-5538 is a medium-severity server-side request forgery vulnerability in QingdaoU OnlineJudge, published on 5 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-5538 and fix it if it is affected.\n\nWhat it is: CVE-2026-5538 is a medium-severity server-side request forgery vulnerability in QingdaoU OnlineJudge, published on 5 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5538 exists.\n\nAffected product: QingdaoU OnlineJudge. 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-2026-5538/ (Markdown: https://insights.sbomify.com/CVE-2026-5538/index.md)","id":"CVE-2026-5538","markdown":"https://insights.sbomify.com/CVE-2026-5538/index.md","name":"CVE-2026-5538","record":{"aliases":["GHSA-fpw6-p57h-mv5q"],"analysis":{"component_type":"web_application","fix_type":"no_fix_stated","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"OnlineJudge platform","requires_auth":"low_privilege","summary":"Remote attackers can exploit a server-side request forgery vulnerability in the judge_server_heartbeat endpoint of QingdaoU OnlineJudge.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","version":"4.0"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"description":"A vulnerability was detected in QingdaoU OnlineJudge up to 1.6.1. Affected by this issue is the function service_url of the file JudgeServer.service_url of the component judge_server_heartbeat Endpoint. The manipulation results in server-side request forgery. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"QingdaoU OnlineJudge judge_server_heartbeat Endpoint JudgeServer.service_url server-side request forgery","id":"CVE-2026-5538","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"code-projects Simple Laundry System Parameter modifymember.php cross site scripting","id":"CVE-2026-5539"},"packages":[],"prev":{"headline":"halex CourseSEL HTTP GET Parameter IndexController.class.php check_sel sql injection","id":"CVE-2026-5537"},"products":["OnlineJudge"],"published":"2026-04-05","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-06","vendors":["QingdaoU"]},"summary":"Remote attackers can exploit a server-side request forgery vulnerability in the judge_server_heartbeat endpoint of QingdaoU OnlineJudge.","url":"https://insights.sbomify.com/CVE-2026-5538/"}