{"answers":{"affected":"3 open source packages ship an affected version, including aiohttp. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-50269 in the wild and no public exploit code.","fix":"Upgrade aiohttp to 3.14.0 or later.","what":"CVE-2026-50269 is a low-severity vulnerability in aio-libs aiohttp, published on 22 Jun 2026."},"fix_prompt":"Check this codebase for CVE-2026-50269 and fix it if it is affected.\n\nWhat it is: CVE-2026-50269 is a low-severity vulnerability in aio-libs aiohttp, published on 22 Jun 2026. \nExploitation: There is no known exploitation of CVE-2026-50269 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- aiohttp (PyPI): affected all versions; fixed in 3.14.0\n- aiohttp (PyPI): affected all versions; fixed in 3.14.0\n- aiohttp (PyPI): affected all versions; fixed in 3.14.0\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-2026-50269/ (Markdown: https://insights.sbomify.com/CVE-2026-50269/index.md)","id":"CVE-2026-50269","markdown":"https://insights.sbomify.com/CVE-2026-50269/index.md","name":"CVE-2026-50269","record":{"aliases":["AZL-90656","CLEANSTART-2026-NU42168","CLEANSTART-2026-OD07469","DEBIAN-CVE-2026-50269","ECHO-b9f2-2c14-64ab","GHSA-m6qw-4cw2-hm4m","MINI-2374-p395-c8gp","MINI-28cc-vf5v-6hvf","MINI-3fv5-jmpv-vq4f","MINI-6cvj-xw49-q9vf","MINI-6rc7-pcx5-6qpq","MINI-89jq-hg65-95qx","MINI-g4w5-4g88-28q2","MINI-g7xg-hpq8-r65p","MINI-gvj4-5qg5-4cf2","MINI-hcwf-4jcx-9pr4","MINI-mjgm-9hc9-h5gq","MINI-p69x-qp3p-q2cc","MINI-pf2v-973c-7mh3","MINI-q44c-63h3-6x2x","MINI-r438-83m7-mc5f","MINI-vq4x-wr2m-j2jw","PYSEC-2026-2106","ROOT-APP-PYPI-CVE-2026-50269","UBUNTU-CVE-2026-50269"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[{"product":"aiohttp","vendor":"aiohttp"}],"cvss":{"score":2.7,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U","version":"4.0"},"cwes":[{"id":"CWE-93","name":"Improper Neutralization of CRLF Sequences"},{"id":"CWE-113","name":"Improper Neutralization of CRLF Sequences in HTTP Headers"}],"description":"AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.0, attacker-controlled input included into multipart/payload headers can be used to modify a request to inject additional headers or similar. In the unlikely situation that an application is passing user-controlled strings into MultipartWriter.append(headers=...) or Payload.headers, then an attacker may be able to modify the request to inject headers or change the contents of the request. This vulnerability is fixed in 3.14.0.","ecosystems":["PyPI"],"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":"AIOHTTP: CRLF injection in multipart headers","id":"CVE-2026-50269","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":null,"year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"dd-trace-java: Improper parsing of W3C baggage headers may lead to DoS","id":"CVE-2026-50270"},"packages":[{"ecosystem":"PyPI","fixed":["3.14.0"],"introduced":["0"],"last_affected":[],"package":"aiohttp","purl":null,"source":"GHSA-m6qw-4cw2-hm4m"},{"ecosystem":"PyPI","fixed":["3.14.0"],"introduced":["0"],"last_affected":[],"package":"aiohttp","purl":"pkg:pypi/aiohttp","source":"GHSA-m6qw-4cw2-hm4m"},{"ecosystem":"PyPI","fixed":["3.14.0"],"introduced":["0"],"last_affected":[],"package":"aiohttp","purl":"pkg:pypi/aiohttp","source":"PYSEC-2026-2106"}],"prev":{"headline":"Steeltoe: OAEP setting silently selects PKCS#1 v1.5 padding","id":"CVE-2026-50268"},"products":["aiohttp"],"published":"2026-06-22","related":[{"cvss_score":8.7,"headline":"aiohttp memory leak when middleware is enabled when requesting a resource with a non-allowed method","id":"CVE-2024-52303","kev_date_added":null,"published":"2024-11-18"},{"cvss_score":7.5,"headline":"AIOHTTP's HTTP Parser auto_decompress feature is vulnerable to zip bomb","id":"CVE-2025-69223","kev_date_added":null,"published":"2026-01-05"},{"cvss_score":7.5,"headline":"Denial of service when trying to parse malformed POST requests in aiohttp","id":"CVE-2024-30251","kev_date_added":null,"published":"2024-05-02"},{"cvss_score":7.2,"headline":"aiohttp's ClientSession is vulnerable to CRLF injection via version","id":"CVE-2023-49081","kev_date_added":null,"published":"2023-11-30"},{"cvss_score":6.9,"headline":"AIOHTTP: Uncapped memory usage possible through aiohttp allowing unlimited trailer headers","id":"CVE-2026-22815","kev_date_added":null,"published":"2026-04-01"},{"cvss_score":6.6,"headline":"AIOHTTP: HTTP/1 Pipelined Requests Queue Without Limit","id":"CVE-2026-54273","kev_date_added":null,"published":"2026-06-22"},{"cvss_score":6.6,"headline":"AIOHTTP: Incomplete websocket frame payloads bypass memory limits","id":"CVE-2026-54274","kev_date_added":null,"published":"2026-06-22"}],"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":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-22","vendors":["aio-libs"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-50269/"}