{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-74758 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-74758 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-74758 is a vulnerability in Apache bRPC, published on 21 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-74758 and fix it if it is affected.\n\nWhat it is: CVE-2026-74758 is a vulnerability in Apache bRPC, published on 21 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-74758 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-2026-74758/ (Markdown: https://insights.sbomify.com/CVE-2026-74758/index.md)","id":"CVE-2026-74758","markdown":"https://insights.sbomify.com/CVE-2026-74758/index.md","name":"CVE-2026-74758","record":{"aliases":["GHSA-jhf7-xcw3-gmv5"],"analysis":null,"analysis_generated_by":null,"assigner":"apache","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"A heap use-after-free in the RTMP protocol component of Apache bRPC (versions \u003c 1.18.0) allows a remote attacker to crash a bRPC RTMP server by sending a crafted Abort control message. No authentication or application-level request is required.\n\nRoot Cause:\nWhen an RTMP Abort control message names the chunk stream that is currently being parsed (the chunk stream carrying the message itself), RtmpChunkStream::OnAbortMessage calls RtmpContext::ClearChunkStream, which deletes the RtmpChunkStream while its Feed() is still running. After the message handler returns, Feed() continues to access members of the deleted object, resulting in a heap-use-after-free.\n\nAffected Scenarios:\nbRPC servers that enable RTMP support (ServerOptions.rtmp_service set) and accept connections from untrusted networks.\n\nHow to Fix:\n1. Upgrade bRPC to version 1.18.0, which fixes this issue.\n2. Apply this patch:  https://github.com/apache/brpc/pull/3452 \n\nThe fix skips clearing the chunk stream when the Abort message targets the chunk stream that is currently being parsed.","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: Heap Use-After-Free in RTMP Abort Message Handling","id":"CVE-2026-74758","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Spoofing of RemoveSubscription clientId","id":"CVE-2026-74761"},"packages":[],"prev":{"headline":"Apache bRPC: Uncontrolled Memory Allocation via Malicious mcpack Array Item Count","id":"CVE-2026-74757"},"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-2026-74758/"}