{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-32240 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-32240 is a medium-severity vulnerability in capnproto, published on 12 Mar 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-2026-32240 and fix it if it is affected.\n\nWhat it is: CVE-2026-32240 is a medium-severity vulnerability in capnproto, published on 12 Mar 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-2026-32240 in the wild and no public exploit code.\n\nAffected product: capnproto. 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-2026-32240/ (Markdown: https://insights.sbomify.com/CVE-2026-32240/index.md)","id":"CVE-2026-32240","markdown":"https://insights.sbomify.com/CVE-2026-32240/index.md","name":"CVE-2026-32240","record":{"aliases":["AZL-79800","DEBIAN-CVE-2026-32240","GHSA-vpcq-mx5v-32wm","JLSEC-2026-1270","UBUNTU-CVE-2026-32240"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["other"],"network_reachable":"yes","non_default_config":false,"product_category":"Cap'n Proto library","requires_auth":"none","summary":"An integer overflow in Cap'n Proto's HTTP chunk parsing allows HTTP request/response smuggling by truncating large chunk sizes.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"capnproto","vendor":"capnproto"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-444","name":"Inconsistent Interpretation of HTTP Requests"},{"id":"CWE-197","name":"Numeric Truncation Error"}],"description":"Cap'n Proto is a data interchange format and capability-based RPC system. Prior to 1.4.0, when using Transfer-Encoding: chunked, if a chunk's size parsed to a value of 2^64 or larger, it would be truncated to a 64-bit integer. In theory, this bug could enable HTTP request/response smuggling. This vulnerability is fixed in 1.4.0.","ecosystems":[],"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":"Cap'n Proto: Integer overflow in KJ-HTTP chunk size","id":"CVE-2026-32240","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Flannel vulnerable to cross-node remote code execution via extension backend BackendData injection","id":"CVE-2026-32241"},"packages":[],"prev":{"headline":"Cap'n Proto has an integer overflow in KJ-HTTP","id":"CVE-2026-32239"},"products":["capnproto"],"published":"2026-03-12","related":[{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2015-2311","kev_date_added":null,"published":"2017-08-09"},{"cvss_score":9.1,"headline":"Integer overflow in n/a","id":"CVE-2015-2310","kev_date_added":null,"published":"2017-08-09"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2015-2312","kev_date_added":null,"published":"2017-08-09"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2015-2313","kev_date_added":null,"published":"2017-08-09"},{"cvss_score":7.5,"headline":"Integer overflow in n/a","id":"CVE-2017-7892","kev_date_added":null,"published":"2017-04-17"},{"cvss_score":6.3,"headline":"Cap'n Proto has an integer overflow in KJ-HTTP","id":"CVE-2026-32239","kev_date_added":null,"published":"2026-03-12"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-13","vendors":["capnproto"]},"summary":"An integer overflow in Cap'n Proto's HTTP chunk parsing allows HTTP request/response smuggling by truncating large chunk sizes.","url":"https://insights.sbomify.com/CVE-2026-32240/"}