{"answers":{"affected":"1 open source package ship an affected version, including soupsieve.","exploited":"There is no known exploitation of CVE-2026-126192 in the wild and no public exploit code.","exposure":"An affected version is only exploitable if your software uses the vulnerable function or option. Many projects that include it are not exposed.","fix":"Upgrade soupsieve to 2.10.0 or later.","what":"CVE-2026-126192 is a medium-severity denial of service vulnerability in facelessuser soupsieve, published on 12 Nov 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-2026-126192 and fix it if it is affected.\n\nWhat it is: CVE-2026-126192 is a medium-severity denial of service vulnerability in facelessuser soupsieve, published on 12 Nov 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-2026-126192 in the wild and no public exploit code.\nExposure: An affected version is only exploitable if your software uses the vulnerable function or option. Many projects that include it are not exposed.\n\nAffected packages and fixed versions:\n- soupsieve (PyPI): affected all versions; fixed in 2.10.0\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-2026-126192/ (Markdown: https://insights.sbomify.com/CVE-2026-126192/index.md)","id":"CVE-2026-126192","markdown":"https://insights.sbomify.com/CVE-2026-126192/index.md","name":"CVE-2026-126192","record":{"aliases":["GHSA-4j63-6c4x-wfg4"],"analysis":{"component_type":"library","exploitable_when_present":false,"fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python CSS selector library","requires_auth":"none","requires_specific_call":true,"summary":"Attacker-controlled HTML can cause quadratic processing time in apps evaluating fixed Soup Sieve selectors over untrusted markup.","user_interaction":"not_required","vuln_class":"denial_of_service","vulnerable_functions":[]},"analysis_generated_by":"sbomify/insights-2b-fp8","assigner":"GitHub_M","cpe":[],"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:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-407","name":"Inefficient Algorithmic Complexity"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.10, matching a developer-authored selector that places the general sibling combinator inside :has() repeatedly scans each candidate element's following siblings when the right-hand side is absent, producing quadratic work on attacker-controlled HTML. Applications that evaluate a fixed selector such as div:has(a ~ b) over untrusted markup can have a worker occupied for minutes by a small document, while the adjacent sibling form and trusted-only document processing are not affected in the same way. This issue is fixed in version 2.10.","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":"Soup Sieve: General sibling combinator inside :has() matches untrusted HTML in quadratic time","id":"CVE-2026-126192","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":1,"n_references":4,"next":{"headline":"Denial of service in soupsieve","id":"CVE-2026-126193"},"nickname":null,"packages":[{"ecosystem":"PyPI","fixed":["2.10.0"],"introduced":["0"],"last_affected":[],"package":"soupsieve","purl":null,"source":"GHSA-4j63-6c4x-wfg4"}],"prev":{"headline":"Soup Sieve: Exponential ReDoS in selector compilation via \\9-run in CSS_ESCAPES/IDENTIFIER","id":"CVE-2026-126191"},"products":["soupsieve"],"published":"2026-11-12","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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-11-12","vendors":["facelessuser"]},"summary":"Attacker-controlled HTML can cause quadratic processing time in apps evaluating fixed Soup Sieve selectors over untrusted markup.","url":"https://insights.sbomify.com/CVE-2026-126192/"}