{"answers":{"affected":"3 open source packages ship an affected version, including mistune. It affects 2 products.","exploited":"There is no known exploitation of CVE-2022-34749 in the wild and no public exploit code.","fix":"Upgrade mistune to 2.0.3 or later.","what":"CVE-2022-34749 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 25 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2022-34749 and fix it if it is affected.\n\nWhat it is: CVE-2022-34749 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 25 Jul 2022. 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-2022-34749 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- mistune (PyPI): affected from 2.0.0a1; fixed in 2.0.3\n- mistune (PyPI): affected from 2.0.0a1; fixed in 2.0.3\n- mistune (PyPI): affected from 2.0.0a1; fixed in 2.0.3\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-2022-34749/ (Markdown: https://insights.sbomify.com/CVE-2022-34749/index.md)","id":"CVE-2022-34749","markdown":"https://insights.sbomify.com/CVE-2022-34749/index.md","name":"CVE-2022-34749","record":{"aliases":["AZL-10403","DEBIAN-CVE-2022-34749","GHSA-fw3v-x4f2-v673","PYSEC-2022-237","UBUNTU-CVE-2022-34749","openSUSE-SU-2024:12350-1","openSUSE-SU-2025:14637-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python Markdown library","requires_auth":"none","summary":"An attacker can cause a denial of service in the mistune library by triggering catastrophic backtracking in regular expressions during inline markup processing.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"mistune","vendor":"mistune_project"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","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-1333","name":"Inefficient Regular Expression Complexity"}],"description":"In mistune through 2.0.2, support of inline markup is implemented by using regular expressions that can involve a high amount of backtracking on certain edge cases. This behavior is commonly named catastrophic backtracking.","ecosystems":["PyPI","openSUSE:Tumbleweed"],"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":"Mistune vulnerable to catastrophic backtracking","id":"CVE-2022-34749","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"fedoraproject:fedora","products":["fedoraproject:fedora"],"type":"denial_of_service","year":"2022"},"n_packages":4,"n_references":3,"next":{"headline":"Denial of service in n/a","id":"CVE-2022-34750"},"packages":[{"ecosystem":"PyPI","fixed":["2.0.3"],"introduced":["2.0.0a1"],"last_affected":[],"package":"mistune","purl":null,"source":"GHSA-fw3v-x4f2-v673"},{"ecosystem":"PyPI","fixed":["2.0.3"],"introduced":["2.0.0a1"],"last_affected":[],"package":"mistune","purl":"pkg:pypi/mistune","source":"GHSA-fw3v-x4f2-v673"},{"ecosystem":"PyPI","fixed":["2.0.3"],"introduced":["2.0.0a1"],"last_affected":[],"package":"mistune","purl":"pkg:pypi/mistune","source":"PYSEC-2022-237"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["3.1.0-1.1"],"introduced":["0"],"last_affected":[],"package":"python-mistune","purl":"pkg:rpm/opensuse/python-mistune\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2025:14637-1"}],"prev":{"headline":"Memory corruption in Simcenter Femap","id":"CVE-2022-34748"},"products":["n/a"],"published":"2022-07-25","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"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":"openSUSE"},{"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"An attacker can cause a denial of service in the mistune library by triggering catastrophic backtracking in regular expressions during inline markup processing.","url":"https://insights.sbomify.com/CVE-2022-34749/"}