{"api_version":"1","generated_at":"2026-10-27T04:40:59+00:00","cve":"CVE-2026-54426","urls":{"html":"https://cve.report/CVE-2026-54426","api":"https://cve.report/api/cve/CVE-2026-54426.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-54426","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-54426"},"summary":{"title":"Apache bRPC: Stack Exhaustion via Unbounded Recursion in Redis Reply Parser","description":"Uncontrolled recursion in the Redis reply parser in Apache bRPC < 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array level without enforcing a depth limit. The fix adds a configurable Redis reply depth limit with default value 128 and rejects replies exceeding that limit. \n\nAffected Scenarios:\nApplications using bRPC as a Redis client with ChannelOptions.protocol=\"redis\" and receiving replies from an untrusted or faulty Redis server peer.\n\nHow to Fix:\n1. Upgrade Apache bRPC to 1.18.0.\n2. Apply the patch from PR  https://github.com/apache/brpc/pull/3344 .\n\nNote:\nAfter applying the fix, Redis replies with array nesting deeper than redis_max_reply_depth are rejected.","state":"PUBLISHED","assigner":"apache","published_at":"2026-10-21 12:17:21","updated_at":"2026-10-26 21:10:00"},"problem_types":["CWE-674","CWE-674 CWE-674 Uncontrolled Recursion"],"metrics":[],"references":[{"url":"https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb","name":"https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb","refsource":"security@apache.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-54426","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54426","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Apache Software Foundation","product":"Apache bRPC","version":"affected 1.18.0 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Nikko Enggaliano Pratama (nikkoenggaliano@gmail.com) on Github","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"54426","cve":"CVE-2026-54426","epss":"0.001590000","percentile":"0.049620000","score_date":"2026-10-26","updated_at":"2026-10-27 00:12:16"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"collectionURL":"https://github.com","defaultStatus":"unaffected","packageName":"apache/brpc","packageURL":"pkg:github/apache/brpc","product":"Apache bRPC","vendor":"Apache Software Foundation","versions":[{"lessThan":"1.18.0","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Nikko Enggaliano Pratama (nikkoenggaliano@gmail.com) on Github"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Uncontrolled recursion in the Redis reply parser in Apache bRPC &lt; 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array level without enforcing a depth limit. The fix adds a configurable Redis reply depth limit with default value 128 and rejects replies exceeding that limit.&nbsp;<br><br>Affected Scenarios:<br>Applications using bRPC as a Redis client with ChannelOptions.protocol=\"redis\" and receiving replies from an untrusted or faulty Redis server peer.<br><br>How to Fix:<br>1. Upgrade Apache bRPC to 1.18.0.<br>2. Apply the patch from PR <a target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/apache/brpc/pull/3344\">https://github.com/apache/brpc/pull/3344</a>.<br><br>Note:<br>After applying the fix, Redis replies with array nesting deeper than redis_max_reply_depth are rejected."}],"value":"Uncontrolled recursion in the Redis reply parser in Apache bRPC < 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array level without enforcing a depth limit. The fix adds a configurable Redis reply depth limit with default value 128 and rejects replies exceeding that limit. \n\nAffected Scenarios:\nApplications using bRPC as a Redis client with ChannelOptions.protocol=\"redis\" and receiving replies from an untrusted or faulty Redis server peer.\n\nHow to Fix:\n1. Upgrade Apache bRPC to 1.18.0.\n2. Apply the patch from PR  https://github.com/apache/brpc/pull/3344 .\n\nNote:\nAfter applying the fix, Redis replies with array nesting deeper than redis_max_reply_depth are rejected."}],"metrics":[{"other":{"content":{"text":"high"},"type":"Textual description of severity"},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-674","description":"CWE-674 Uncontrolled Recursion","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-21T11:32:19.591Z","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache"},"references":[{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb"}],"source":{"discovery":"EXTERNAL"},"title":"Apache bRPC: Stack Exhaustion via Unbounded Recursion in Redis Reply Parser","x_generator":{"engine":"Vulnogram 0.2.0"}}},"cveMetadata":{"assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","assignerShortName":"apache","cveId":"CVE-2026-54426","datePublished":"2026-10-21T11:32:19.591Z","dateReserved":"2026-06-14T07:05:33.297Z","dateUpdated":"2026-10-21T11:32:19.591Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-21 12:17:21","lastModifiedDate":"2026-10-26 21:10:00","problem_types":["CWE-674","CWE-674 CWE-674 Uncontrolled Recursion"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"54426","Ordinal":"1","Title":"Apache bRPC: Stack Exhaustion via Unbounded Recursion in Redis R","CVE":"CVE-2026-54426","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"54426","Ordinal":"1","NoteData":"Uncontrolled recursion in the Redis reply parser in Apache bRPC < 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array level without enforcing a depth limit. The fix adds a configurable Redis reply depth limit with default value 128 and rejects replies exceeding that limit. \n\nAffected Scenarios:\nApplications using bRPC as a Redis client with ChannelOptions.protocol=\"redis\" and receiving replies from an untrusted or faulty Redis server peer.\n\nHow to Fix:\n1. Upgrade Apache bRPC to 1.18.0.\n2. Apply the patch from PR  https://github.com/apache/brpc/pull/3344 .\n\nNote:\nAfter applying the fix, Redis replies with array nesting deeper than redis_max_reply_depth are rejected.","Type":"Description","Title":"Apache bRPC: Stack Exhaustion via Unbounded Recursion in Redis R"}]}}}