{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-78334 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-78334 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-78334 is a vulnerability in Apache bRPC, published on 21 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-78334 and fix it if it is affected.\n\nWhat it is: CVE-2026-78334 is a vulnerability in Apache bRPC, published on 21 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-78334 in the wild and no public exploit code.\n\nAffected product: Apache bRPC. 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-2026-78334/ (Markdown: https://insights.sbomify.com/CVE-2026-78334/index.md)","id":"CVE-2026-78334","markdown":"https://insights.sbomify.com/CVE-2026-78334/index.md","name":"CVE-2026-78334","record":{"aliases":["GHSA-ghj4-cq25-h326"],"analysis":null,"analysis_generated_by":null,"assigner":"apache","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"Missing authentication in the streaming RPC path of Apache bRPC (version \u003c 1.18.0) on all platforms allows a remote attacker to bypass server authentication and inject or deliver streaming frames, when a server is configured with an Authenticator.\n\nRoot Cause:\nWhen authentication is configured, streaming RPC frames are consumed directly by the streaming parser (ParseStreamingMessage) and never pass through InputMessenger's authentication hook, so an unauthenticated peer can exchange frames without being authenticated. In addition, a server-accepted stream is bound lazily to the first frame that happens to carry its id, so a stream could accept a frame carrying its id from a socket other than the socket that created the stream.\n\nAffected Scenarios:\nA bRPC server configured with authentication that serves streaming RPC from an untrusted network, or a deployment where a foreign connection can impersonate a stream by id, can be made to accept unauthorized streaming frames.\n\nHow to Fix:\nUpgrade bRPC to 1.18.0, which fixes this issue, or apply the patch in PR https://github.com/apache/brpc/pull/3481. \n\nNote:\nThe fix rejects streaming frames on server sockets when configured authentication has not completed, and keeps server-accepted streams bound to the socket of their creating RPC and rejects frames arriving from another socket. Authenticated streaming RPC behavior and the wire format are unchanged; only unauthenticated or foreign-socket frames are now rejected.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Apache bRPC: Missing Authentication for Streaming RPC Frames","id":"CVE-2026-78334","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Incorrect Authorization in GitLab","id":"CVE-2026-78335"},"packages":[],"prev":{"headline":"12 Step Meeting List 3.17 - 3.19.16 - Unauthenticated Stored XSS via Geocode Event Log","id":"CVE-2026-78333"},"products":["Apache bRPC"],"published":"2026-10-21","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)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-21","vendors":["Apache Software Foundation"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-78334/"}