{"id":"CVE-2026-11922","state":"PUBLISHED","title":"Rate-limit Bypass in zenml-io/zenml","description":"A vulnerability in zenml-io/zenml versions 0.57.0 through 0.94.2 allows an attacker to bypass rate-limiting on the `POST /api/v1/login` and self password-change endpoints by rotating the `X-Forwarded-For` header. The rate limiter keys requests by `request.client.host`, which is derived from the `X-Forwarded-For` header when Uvicorn is launched with `--proxy-headers --forwarded-allow-ips *`. This configuration allows clients to control the value of `request.client.host`, effectively bypassing rate-limiting protections. This vulnerability leaves the affected endpoints open to unthrottled credential guessing attacks.","publishedAt":"2026-07-24T03:27:39.188Z","updatedAt":"2026-07-24T12:24:23.509Z","severity":{"score":6.5,"label":"Medium","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","source":"@huntr_ai"},"assigner":"@huntr_ai","products":["zenml-io zenml-io/zenml"],"affected":[{"vendor":"zenml-io","product":"zenml-io/zenml","versions":[{"version":"unspecified","status":"affected","lessThan":"0.95.0","versionType":"custom"}]}],"references":["https://huntr.com/bounties/3cb8bf6a-ae55-4b38-8da3-601c666a210e","https://github.com/zenml-io/zenml/commit/8a2214bdd63eb8200ce4719d82c6f0d935e922d1"],"weaknesses":["CWE-290"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/11xxx/CVE-2026-11922.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-11922","state":"PUBLISHED","datePublished":"2026-07-24T03:27:39.188Z","dateUpdated":"2026-07-24T12:24:23.509Z","assignerShortName":"@huntr_ai","assignerOrgId":"c09c270a-b464-47c1-9133-acb35b22c19a","dateReserved":"2026-06-10T17:41:21.911Z"},"containers":{"cna":{"title":"Rate-limit Bypass in zenml-io/zenml","descriptions":[{"lang":"en","value":"A vulnerability in zenml-io/zenml versions 0.57.0 through 0.94.2 allows an attacker to bypass rate-limiting on the `POST /api/v1/login` and self password-change endpoints by rotating the `X-Forwarded-For` header. The rate limiter keys requests by `request.client.host`, which is derived from the `X-Forwarded-For` header when Uvicorn is launched with `--proxy-headers --forwarded-allow-ips *`. This configuration allows clients to control the value of `request.client.host`, effectively bypassing rate-limiting protections. This vulnerability leaves the affected endpoints open to unthrottled credential guessing attacks."}],"affected":[{"vendor":"zenml-io","product":"zenml-io/zenml","versions":[{"version":"unspecified","status":"affected","lessThan":"0.95.0","versionType":"custom"}]}],"references":[{"url":"https://huntr.com/bounties/3cb8bf6a-ae55-4b38-8da3-601c666a210e"},{"url":"https://github.com/zenml-io/zenml/commit/8a2214bdd63eb8200ce4719d82c6f0d935e922d1"}],"metrics":[{"cvssV3_0":{"version":"3.0","attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":6.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-290","type":"CWE","lang":"en","description":"CWE-290 Authentication Bypass by Spoofing"}]}],"providerMetadata":{"shortName":"@huntr_ai","orgId":"c09c270a-b464-47c1-9133-acb35b22c19a","dateUpdated":"2026-07-24T03:27:39.188Z"},"source":{"advisory":"3cb8bf6a-ae55-4b38-8da3-601c666a210e","discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://huntr.com/bounties/3cb8bf6a-ae55-4b38-8da3-601c666a210e","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-24T12:23:58.855408Z","id":"CVE-2026-11922","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-24T12:24:23.509Z"}}]}}}