{"id":"CVE-2021-22160","aliases":["GHSA-3cv4-xxv7-934q"],"url":"https://o3.security/vulnerability/CVE-2021-22160","summary":"Improper Verification of Cryptographic Signature in Apache Pulsar in TensorFlow","details":"If Apache Pulsar is configured to authenticate clients using tokens based on JSON Web Tokens (JWT), the signature of the token is not validated if the algorithm of the presented token is set to \"none\". This allows an attacker to connect to Pulsar instances as any user (incl. admins).","published":"2021-05-26T13:15:07.697Z","modified":"2026-07-09T00:12:39.083488Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.pulsar:pulsar","fixedVersion":"2.7.2"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/r8e545559781231a83bf0644548c660255859e52feb86bbfcd42590da%40%3Cdev.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/ra49cb62105154e4795b259c79a6b27d63bfa2ab5787ff8529b089550%40%3Cdev.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/ra49cb62105154e4795b259c79a6b27d63bfa2ab5787ff8529b089550%40%3Cusers.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rbe845aa1573a61769b9c5916c62971f4b10de87c2ea5f38a97f0cf84%40%3Cdev.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rca54f4b26ba5e6f2e39732b47ec51640e89f57e3b6a38ac3bab314df%40%3Cdev.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf2e90942996dceebac8296abf39257cfeb5ae918f82f7af3d37a48c5%40%3Cdev.pulsar.apache.org%3E"},{"type":"ADVISORY","url":"https://lists.apache.org/thread.html/r347650d15a3e9c5f58b83e918b6ad6dedc2a63d3eb63da8e6a7be87e%40%3Cusers.pulsar.apache.org%3E"},{"type":"ADVISORY","url":"https://lists.apache.org/thread.html/r9a12b4da2f26ce9b8f7e7117a879efaa973dab7e54717bbc7923fab1%40%3Cdev.pulsar.apache.org%3E"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22160"},{"type":"WEB","url":"https://github.com/apache/pulsar/releases/tag/v2.7.2"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r08c7df60cae031361df7fbac39d08b6d5b5079e74db5195d409db9a2@%3Cdev.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r8e545559781231a83bf0644548c660255859e52feb86bbfcd42590da@%3Cdev.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/ra49cb62105154e4795b259c79a6b27d63bfa2ab5787ff8529b089550@%3Cdev.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/ra49cb62105154e4795b259c79a6b27d63bfa2ab5787ff8529b089550@%3Cusers.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rbe845aa1573a61769b9c5916c62971f4b10de87c2ea5f38a97f0cf84@%3Cdev.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rca54f4b26ba5e6f2e39732b47ec51640e89f57e3b6a38ac3bab314df@%3Cdev.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/re2ae364e0c02093dc721699698c6f23cfbba0220c78b5e28cafeae81@%3Ccommits.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf2e90942996dceebac8296abf39257cfeb5ae918f82f7af3d37a48c5@%3Cdev.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf54fefc25c49d4715d484133d438f13bf2e515a5fed5d3a745d4f6e7@%3Ccommits.pulsar.apache.org%3E"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:12:39.083488Z"}}