{"answers":{"affected":"3 open source packages ship an affected version, including pypdf. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-22691 in the wild and no public exploit code.","fix":"Upgrade pypdf to 6.6.0 or later.","what":"CVE-2026-22691 is a low-severity denial of service vulnerability in Pypdf Project Pypdf, published on 10 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-2026-22691 and fix it if it is affected.\n\nWhat it is: CVE-2026-22691 is a low-severity denial of service vulnerability in Pypdf Project Pypdf, published on 10 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-2026-22691 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- pypdf (PyPI): affected all versions; fixed in 6.6.0\n- pypdf (PyPI): affected all versions; fixed in 6.6.0\n- pypdf (PyPI): affected all versions; fixed in 6.6.0\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-2026-22691/ (Markdown: https://insights.sbomify.com/CVE-2026-22691/index.md)","id":"CVE-2026-22691","markdown":"https://insights.sbomify.com/CVE-2026-22691/index.md","name":"CVE-2026-22691","record":{"aliases":["DEBIAN-CVE-2026-22691","GHSA-4f6g-68pf-7vhv","PYSEC-2026-1828","UBUNTU-CVE-2026-22691"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Python PDF library","requires_auth":"none","summary":"Attackers can cause denial of service via long runtimes when processing malformed PDFs with excessive whitespace in non-strict mode.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"pypdf","vendor":"pypdf_project"}],"cvss":{"score":2.7,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U","version":"4.0"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"},{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-reference table, PDF files with lots of whitespace characters become problematic. Only the non-strict reading mode is affected. Only the non-strict reading mode is affected. This issue has been patched in version 6.6.0.","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":"pypdf has possible long runtimes for malformed startxref","id":"CVE-2026-22691","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"pypdf_project:pypdf","products":["pypdf_project:pypdf"],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"October CMS: Twig Sandbox Bypass via Collection Methods","id":"CVE-2026-22692"},"packages":[{"ecosystem":"PyPI","fixed":["6.6.0"],"introduced":["0"],"last_affected":[],"package":"pypdf","purl":null,"source":"GHSA-4f6g-68pf-7vhv"},{"ecosystem":"PyPI","fixed":["6.6.0"],"introduced":["0"],"last_affected":[],"package":"pypdf","purl":"pkg:pypi/pypdf","source":"GHSA-4f6g-68pf-7vhv"},{"ecosystem":"PyPI","fixed":["6.6.0"],"introduced":["0"],"last_affected":[],"package":"pypdf","purl":"pkg:pypi/pypdf","source":"PYSEC-2026-1828"}],"prev":{"headline":"pypdf has possible long runtimes for missing /Root object with large /Size values","id":"CVE-2026-22690"},"products":["pypdf"],"published":"2026-01-10","related":[{"cvss_score":8.7,"headline":"pypdf: Possible large memory usage when retrieving Roman page labels","id":"CVE-2026-102993","kev_date_added":null,"published":"2026-09-30"},{"cvss_score":8.7,"headline":"pypdf: Possible long runtimes/large memory usage when parsing indirect objects","id":"CVE-2026-102994","kev_date_added":null,"published":"2026-09-30"},{"cvss_score":8.7,"headline":"pypdf: Possible large memory usage for large /ToUnicode streams (Follow-up 2)","id":"CVE-2026-102995","kev_date_added":null,"published":"2026-09-30"},{"cvss_score":8.7,"headline":"pypdf: Possible large memory usage when parsing font data","id":"CVE-2026-102996","kev_date_added":null,"published":"2026-09-30"},{"cvss_score":8.7,"headline":"pypdf: Possible long runtimes for partially malformed FlateDecode streams (Follow-up)","id":"CVE-2026-102997","kev_date_added":null,"published":"2026-09-30"},{"cvss_score":8.7,"headline":"pypdf: Possible long runtimes when generating appearance streams","id":"CVE-2026-102998","kev_date_added":null,"published":"2026-09-30"},{"cvss_score":8.7,"headline":"pypdf: Possible long runtimes with large amount of embedded files","id":"CVE-2026-102999","kev_date_added":null,"published":"2026-09-30"}],"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":"2026-01-12","vendors":["py-pdf"]},"summary":"Attackers can cause denial of service via long runtimes when processing malformed PDFs with excessive whitespace in non-strict mode.","url":"https://insights.sbomify.com/CVE-2026-22691/"}