{"answers":{"affected":"3 open source packages ship an affected version, including github.com/rabbitmq/amqp091-go.","exploited":"There is no known exploitation of CVE-2026-77408 in the wild and no public exploit code.","fix":"Upgrade github.com/rabbitmq/amqp091-go to 1.13.0 or later.","what":"CVE-2026-77408 is a critical vulnerability in rabbitmq amqp091-go, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-77408 and fix it if it is affected.\n\nWhat it is: CVE-2026-77408 is a critical vulnerability in rabbitmq amqp091-go, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-77408 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/rabbitmq/amqp091-go (Go): affected all versions; fixed in 1.13.0\n- github.com/rabbitmq/amqp091-go (Go): affected all versions; fixed in 1.13.0\n- github.com/rabbitmq/amqp091-go (Go): affected all versions; fixed in 1.13.0\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-2026-77408/ (Markdown: https://insights.sbomify.com/CVE-2026-77408/index.md)","id":"CVE-2026-77408","markdown":"https://insights.sbomify.com/CVE-2026-77408/index.md","name":"CVE-2026-77408","record":{"aliases":["AZL-103212","AZL-103275","CLEANSTART-2026-KV65948","CLEANSTART-2026-ND68008","CLEANSTART-2026-TI12520","DEBIAN-CVE-2026-77408","ECHO-b9a5-5edf-f6d5","GHSA-j497-x9hr-x34x","GO-2026-6498","MINI-2jh6-2rj3-p4fj","MINI-3gx7-mvp4-cx2h","MINI-3w8j-4jvr-2hq2","MINI-55xw-7gw7-3mj8","MINI-64q5-7hv2-76j8","MINI-6668-x24g-pc34","MINI-66p5-3679-487f","MINI-6qm3-26pg-xqq6","MINI-6rq4-v274-cmcg","MINI-73px-h3p7-f953","MINI-7x52-qpvc-p54p","MINI-979q-296c-8p4p","MINI-c8r5-hrhp-2x8j","MINI-crrc-36vj-cfgc","MINI-f72r-g44x-7j9g","MINI-f7j4-mjwm-m6p9","MINI-fv2j-pjqm-jwr7","MINI-g86q-jv8c-xxfm","MINI-ghg5-4rfh-f3w7","MINI-h2m7-q573-pxcc","MINI-h6q5-hhfc-98mj","MINI-hw92-mjvc-4r6f","MINI-j4j8-h4jx-5jv2","MINI-j5hp-6cwg-mv8v","MINI-mrh2-m5x4-5926","MINI-r4p4-f8h9-7p9j","MINI-rjxj-57h3-5pgh","MINI-rw26-qq9j-rf2m","MINI-vc7w-rmpm-7jq6","MINI-vfph-vf2g-7jj6","MINI-vrj5-qq2c-g88r","MINI-wgjv-vcq6-hr9h","MINI-wmr4-qrrg-f3gc","MINI-x6x3-3f2v-wh8h","MINI-xq6p-r32q-rr2g","MINI-xv82-rwrm-j85m","ROOT-APP-GOBINARY-CVE-2026-77408","UBUNTU-CVE-2026-77408"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Go AMQP client library","requires_auth":"none","summary":"An integer overflow in the Go AMQP client library causes silent data truncation of message properties, leading to state corruption and broken message processing.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:L","version":"4.0"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, the writeShortstr function in write.go casts the byte length of AMQP shortstr property values to uint8 without first rejecting values longer than 255 bytes. An application that accepts an oversized CorrelationId, ReplyTo, MessageId, Expiration, UserId, AppId, ContentType, ContentEncoding, or Type value can therefore serialize a wrapped length and only a truncated prefix, while reporting no error. The resulting silent metadata corruption can break request and reply correlation, routing, tracing, and downstream message processing. This issue is fixed in version 1.13.0.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"RabbitMQ amqp091-go: Silent Data Truncation and State Corruption via Shortstr Integer Overflow","id":"CVE-2026-77408","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"RabbitMQ amqp091-go: Denial of Service via Synchronous Event Channel Blocking","id":"CVE-2026-77409"},"packages":[{"ecosystem":"Go","fixed":["1.13.0"],"introduced":["0"],"last_affected":[],"package":"github.com/rabbitmq/amqp091-go","purl":null,"source":"GHSA-j497-x9hr-x34x"},{"ecosystem":"Go","fixed":["1.13.0"],"introduced":["0"],"last_affected":[],"package":"github.com/rabbitmq/amqp091-go","purl":"pkg:golang/github.com/rabbitmq/amqp091-go","source":"GHSA-j497-x9hr-x34x"},{"ecosystem":"Go","fixed":["1.13.0"],"introduced":["0"],"last_affected":[],"package":"github.com/rabbitmq/amqp091-go","purl":"pkg:golang/github.com/rabbitmq/amqp091-go","source":"GO-2026-6498"}],"prev":{"headline":"RabbitMQ amqp091-go: Plaintext Credential Exposure via Exported PLAIN Authentication Struct Fields","id":"CVE-2026-77407"},"products":["amqp091-go"],"published":"2026-09-16","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-16","vendors":["rabbitmq"]},"summary":"An integer overflow in the Go AMQP client library causes silent data truncation of message properties, leading to state corruption and broken message processing.","url":"https://insights.sbomify.com/CVE-2026-77408/"}