{"answers":{"affected":"3 open source packages ship an affected version, including mistune. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-59925 in the wild and no public exploit code.","fix":"Upgrade mistune to 3.3.0 or later.","what":"CVE-2026-59925 is a high-severity denial of service vulnerability in lepture mistune, published on 8 Jul 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-2026-59925 and fix it if it is affected.\n\nWhat it is: CVE-2026-59925 is a high-severity denial of service vulnerability in lepture mistune, published on 8 Jul 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-2026-59925 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- mistune (PyPI): affected all versions; fixed in 3.3.0\n- mistune (PyPI): affected all versions; fixed in 3.3.0\n- mistune (PyPI): affected all versions; fixed in 3.3.0\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-2026-59925/ (Markdown: https://insights.sbomify.com/CVE-2026-59925/index.md)","id":"CVE-2026-59925","markdown":"https://insights.sbomify.com/CVE-2026-59925/index.md","name":"CVE-2026-59925","record":{"aliases":["AZL-92217","DEBIAN-CVE-2026-59925","ECHO-a954-a105-41df","GHSA-4j32-57v6-6g45","PYSEC-2026-2213","UBUNTU-CVE-2026-59925"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python Markdown parser","requires_auth":"none","summary":"Attackers can cause denial of service in Mistune by submitting long sequences of emphasis markers, triggering quadratic time complexity in the parser.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"mistune","vendor":"mistune_project"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-407","name":"Inefficient Algorithmic Complexity"},{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, long sequences of well-formed double-asterisk or triple-asterisk emphasis pairs around a character cause quadratic work in src/mistune/inline_parser.py because the parser scans forward for matching close markers from every potential opening run, allowing denial of service in default Mistune parsing. This issue is fixed in version 3.3.0.","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":"inline_parser: quadratic-time parsing on long runs of `**x**` and `***x***` emphasis pairs","id":"CVE-2026-59925","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"Mistune: XSS via unescaped class option in Admonition directive","id":"CVE-2026-59926"},"packages":[{"ecosystem":"PyPI","fixed":["3.3.0"],"introduced":["0"],"last_affected":[],"package":"mistune","purl":null,"source":"GHSA-4j32-57v6-6g45"},{"ecosystem":"PyPI","fixed":["3.3.0"],"introduced":["0"],"last_affected":[],"package":"mistune","purl":"pkg:pypi/mistune","source":"GHSA-4j32-57v6-6g45"},{"ecosystem":"PyPI","fixed":["3.3.0"],"introduced":["0"],"last_affected":[],"package":"mistune","purl":"pkg:pypi/mistune","source":"PYSEC-2026-2213"}],"prev":{"headline":"Mistune: Arbitrary File Read via Include directive path traversal","id":"CVE-2026-59924"},"products":["mistune"],"published":"2026-07-08","related":[{"cvss_score":7.5,"headline":"Mistune plugins/formatting: quadratic-time parsing on long runs of `~~x~~`, `==x==`, and `^^x^^` markers (strikethrough / mark / insert)","id":"CVE-2026-59922","kev_date_added":null,"published":"2026-07-08"},{"cvss_score":7.5,"headline":"Mistune block_parser: quadratic-time parsing on long lists of repeated reference-link definitions","id":"CVE-2026-59928","kev_date_added":null,"published":"2026-07-08"},{"cvss_score":6.1,"headline":"Mistune: XSS via percent-encoded javascript URI bypass in safe_url()","id":"CVE-2026-59923","kev_date_added":null,"published":"2026-07-08"},{"cvss_score":6.1,"headline":"Mistune renderers/html.safe_url: HARMFUL_PROTOCOLS list misses legacy and chained schemes that historically chain to `javascript:` execution","id":"CVE-2026-59929","kev_date_added":null,"published":"2026-07-08"},{"cvss_score":6.1,"headline":"Mistune Math Plugin XSS Escape Bypass","id":"CVE-2026-44708","kev_date_added":null,"published":"2026-05-26"},{"cvss_score":6.1,"headline":"Mistune Heading ID Attribute Injection XSS","id":"CVE-2026-44897","kev_date_added":null,"published":"2026-05-26"}],"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":"2026-07-08","vendors":["lepture"]},"summary":"Attackers can cause denial of service in Mistune by submitting long sequences of emphasis markers, triggering quadratic time complexity in the parser.","url":"https://insights.sbomify.com/CVE-2026-59925/"}