{"answers":{"affected":"3 open source packages ship an affected version, including aiohttp. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-49082 exists.","fix":"Upgrade aiohttp to 3.9.0 or later.","what":"CVE-2023-49082 is a medium-severity vulnerability in aio-libs aiohttp, published on 29 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-49082 and fix it if it is affected.\n\nWhat it is: CVE-2023-49082 is a medium-severity vulnerability in aio-libs aiohttp, published on 29 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-49082 exists.\n\nAffected packages and fixed versions:\n- aiohttp (PyPI): affected all versions; fixed in 3.9.0\n- aiohttp (PyPI): affected all versions; fixed in 3.9.0\n- aiohttp (PyPI): affected all versions; fixed in 3.9.0\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-2023-49082/ (Markdown: https://insights.sbomify.com/CVE-2023-49082/index.md)","id":"CVE-2023-49082","markdown":"https://insights.sbomify.com/CVE-2023-49082/index.md","name":"CVE-2023-49082","record":{"aliases":["CLSA-2026-1771373593","CLSA-2026-1790062887","DEBIAN-CVE-2023-49082","ECHO-b440-a71d-cd51","GHSA-qvrw-v9rv-5rjx","PYSEC-2023-251","ROOT-APP-PYPI-CVE-2023-49082","SUSE-SU-2024:0168-1","UBUNTU-CVE-2023-49082"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Python HTTP library","requires_auth":"none","summary":"Attackers can inject CRLF sequences into HTTP requests via the method parameter, enabling request smuggling or header injection in aiohttp applications.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"aiohttp","vendor":"aiohttp"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-93","name":"Improper Neutralization of CRLF Sequences"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Improper validation makes it possible for an attacker to modify the HTTP request (e.g. insert a new header) or even create a new HTTP request if the attacker controls the HTTP method. The vulnerability occurs only if the attacker can control the HTTP method (GET, POST etc.) of the request. If the attacker can control the HTTP version of the request it will be able to modify the request (request smuggling). This issue has been patched in version 3.9.0.","ecosystems":["PyPI","SUSE:Linux Enterprise Module for Python 3 15 SP5","openSUSE:Leap 15.5"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"aiohttp's ClientSession is vulnerable to CRLF injection via method","id":"CVE-2023-49082","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"other","year":"2023"},"n_packages":5,"n_references":4,"next":{"headline":"cryptography vulnerable to NULL-dereference when loading PKCS7 certificates","id":"CVE-2023-49083"},"packages":[{"ecosystem":"PyPI","fixed":["3.9.0"],"introduced":["0"],"last_affected":[],"package":"aiohttp","purl":null,"source":"GHSA-qvrw-v9rv-5rjx"},{"ecosystem":"PyPI","fixed":["3.9.0"],"introduced":["0"],"last_affected":[],"package":"aiohttp","purl":"pkg:pypi/aiohttp","source":"GHSA-qvrw-v9rv-5rjx"},{"ecosystem":"PyPI","fixed":["3.9.0"],"introduced":["0"],"last_affected":[],"package":"aiohttp","purl":"pkg:pypi/aiohttp","source":"PYSEC-2023-251"},{"ecosystem":"SUSE:Linux Enterprise Module for Python 3 15 SP5","fixed":["3.8.6-150400.10.11.1"],"introduced":["0"],"last_affected":[],"package":"python-aiohttp","purl":"pkg:rpm/suse/python-aiohttp\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Python%203%2015%20SP5","source":"SUSE-SU-2024:0168-1"},{"ecosystem":"openSUSE:Leap 15.5","fixed":["3.8.6-150400.10.11.1"],"introduced":["0"],"last_affected":[],"package":"python-aiohttp","purl":"pkg:rpm/opensuse/python-aiohttp\u0026distro=openSUSE%20Leap%2015.5","source":"SUSE-SU-2024:0168-1"}],"prev":{"headline":"aiohttp's ClientSession is vulnerable to CRLF injection via version","id":"CVE-2023-49081"},"products":["aiohttp"],"published":"2023-11-29","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":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-23","vendors":["aio-libs"]},"summary":"Attackers can inject CRLF sequences into HTTP requests via the method parameter, enabling request smuggling or header injection in aiohttp applications.","url":"https://insights.sbomify.com/CVE-2023-49082/"}