{"id":"CVE-2023-34041","aliases":["EUVD-2023-38161","GHSA-9jjv-6rgq-8j87"],"status":"published","title":"CVE-2023-34041-Abuse of HTTP Hop-by-Hop Headers in Cloud Foundry Gorouter","description":"Cloud foundry routing release versions prior to 0.278.0 are vulnerable to abuse of HTTP Hop-by-Hop Headers. An unauthenticated attacker can use this vulnerability for headers like B3 or X-B3-SpanID to affect the identification value recorded in the logs in foundations.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00436,"percentile":0.38121,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2023-09-08T07:22:00Z","modified":"2026-10-28T02:31:00Z","products":[{"vendor":"cloud foundry","product":"cf deployment"},{"vendor":"cloud foundry","product":"routing"},{"vendor":"cloudfoundry","product":"cf-deployment"},{"vendor":"cloudfoundry","product":"routing-release"},{"vendor":"cloudfoundry foundation","product":"cf deployment"}],"references":[{"url":"https://www.cloudfoundry.org/blog/abuse-of-http-hop-by-hop-headers-in-cloud-foundry-gorouter/","tags":["x_transferred","Vendor Advisory","article"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34041","tags":["advisory"]},{"url":"https://www.cloudfoundry.org/blog/abuse-of-http-hop-by-hop-headers-in-cloud-foundry-gorouter"},{"url":"https://github.com/advisories/GHSA-9jjv-6rgq-8j87"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34041.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-34041","title":"CVE-2023-34041-Abuse of HTTP Hop-by-Hop Headers in Cloud Foundry Gorouter","description":"Cloud foundry routing release versions prior to 0.278.0 are vulnerable to abuse of HTTP Hop-by-Hop Headers. An unauthenticated attacker can use this vulnerability for headers like B3 or X-B3-SpanID to affect the identification value recorded in the logs in foundations.\n","status":"published","published":"2023-09-08T07:22:00.607Z","modified":"2024-08-02T15:54:14.253Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:35.912488Z"}],"euvd":[{"id":"EUVD-2023-38161","description":"Cloud foundry routing release versions prior to 0.278.0 are vulnerable to abuse of HTTP Hop-by-Hop Headers. An unauthenticated attacker can use this vulnerability for headers like B3 or X-B3-SpanID to affect the identification value recorded in the logs in foundations.\n","status":"published","published":"2023-09-08T07:22:00Z","modified":"2024-08-02T15:54:14Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T03:50:04.380287Z"}],"ghsa":[{"id":"GHSA-9jjv-6rgq-8j87","title":"Cloud foundry routing release versions prior to 0.278.0 are vulnerable to abuse of HTTP Hop-by...","description":"Cloud foundry routing release versions prior to 0.278.0 are vulnerable to abuse of HTTP Hop-by-Hop Headers. An unauthenticated attacker can use this vulnerability for headers like B3 or X-B3-SpanID to affect the identification value recorded in the logs in foundations.\n","status":"published","published":"2023-09-08T09:30:13Z","modified":"2024-04-04T07:34:05Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T14:56:52.639328Z"}],"nvd":[{"id":"CVE-2023-34041","description":"Cloud foundry routing release versions prior to 0.278.0 are vulnerable to abuse of HTTP Hop-by-Hop Headers. An unauthenticated attacker can use this vulnerability for headers like B3 or X-B3-SpanID to affect the identification value recorded in the logs in foundations.\n","status":"published","published":"2023-09-08T08:15:07.493Z","modified":"2026-06-17T06:02:46.947Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:08:28.268644Z"}],"osv":[{"id":"CVE-2023-34041","title":"CVE-2023-34041-Abuse of HTTP Hop-by-Hop Headers in Cloud Foundry Gorouter","description":"Cloud foundry routing release versions prior to 0.278.0 are vulnerable to abuse of HTTP Hop-by-Hop Headers. An unauthenticated attacker can use this vulnerability for headers like B3 or X-B3-SpanID to affect the identification value recorded in the logs in foundations.\n","status":"published","published":"2023-09-08T07:22:00.607Z","modified":"2026-10-28T02:31:00.078566357Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:32.116263Z"}]}}