{"answers":{"affected":"3 open source packages ship an affected version, including blacksheep. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-22779 in the wild and no public exploit code.","fix":"Upgrade blacksheep to 2.4.6 or later.","what":"CVE-2026-22779 is a medium-severity vulnerability in Neoteroi BlackSheep, published on 14 Jan 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-2026-22779 and fix it if it is affected.\n\nWhat it is: CVE-2026-22779 is a medium-severity vulnerability in Neoteroi BlackSheep, published on 14 Jan 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-2026-22779 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- blacksheep (PyPI): affected all versions; fixed in 2.4.6\n- blacksheep (PyPI): affected all versions; fixed in 2.4.6\n- blacksheep (PyPI): affected all versions; fixed in 2.4.6\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-2026-22779/ (Markdown: https://insights.sbomify.com/CVE-2026-22779/index.md)","id":"CVE-2026-22779","markdown":"https://insights.sbomify.com/CVE-2026-22779/index.md","name":"CVE-2026-22779","record":{"aliases":["GHSA-6pw3-h7xf-x4gp","PYSEC-2026-1222"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify","other"],"network_reachable":"yes","non_default_config":false,"product_category":"Python web framework","requires_auth":"none","summary":"Attackers can inject CRLF sequences into HTTP headers via unsanitized input, potentially modifying requests or creating new ones in BlackSheep client sessions.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"blacksheep","vendor":"neoteroi"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-113","name":"Improper Neutralization of CRLF Sequences in HTTP Headers"}],"description":"BlackSheep is an asynchronous web framework to build event based web applications with Python. Prior to 2.4.6, the HTTP Client implementation in BlackSheep is vulnerable to CRLF injection. Missing headers validation makes it possible for an attacker to modify the HTTP requests (e.g. insert a new header) or even create a new HTTP request. Exploitation requires developers to pass unsanitized user input directly into headers.The server part is not affected because BlackSheep delegates to an underlying ASGI server handling of response headers. This vulnerability is fixed in 2.4.6.","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":"BlackSheep ClientSession is vulnerable to CRLF injection","id":"CVE-2026-22779","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"other","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"Rizin has a heap overflow on mach0_chained_fixups.c","id":"CVE-2026-22780"},"packages":[{"ecosystem":"PyPI","fixed":["2.4.6"],"introduced":["0"],"last_affected":[],"package":"blacksheep","purl":null,"source":"GHSA-6pw3-h7xf-x4gp"},{"ecosystem":"PyPI","fixed":["2.4.6"],"introduced":["0"],"last_affected":[],"package":"blacksheep","purl":"pkg:pypi/blacksheep","source":"GHSA-6pw3-h7xf-x4gp"},{"ecosystem":"PyPI","fixed":["2.4.6"],"introduced":["0"],"last_affected":[],"package":"blacksheep","purl":"pkg:pypi/blacksheep","source":"PYSEC-2026-1222"}],"prev":{"headline":"vLLM leaks a heap address when PIL throws an error","id":"CVE-2026-22778"},"products":["BlackSheep"],"published":"2026-01-14","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":"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":"2026-01-14","vendors":["Neoteroi"]},"summary":"Attackers can inject CRLF sequences into HTTP headers via unsanitized input, potentially modifying requests or creating new ones in BlackSheep client sessions.","url":"https://insights.sbomify.com/CVE-2026-22779/"}