{"answers":{"affected":"3 open source packages ship an affected version, including pypdf. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-71852 in the wild and no public exploit code.","fix":"Upgrade pypdf to 6.15.0 or later.","what":"CVE-2026-71852 is a medium-severity denial of service vulnerability in Pypdf Project Pypdf, published on 7 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-71852 and fix it if it is affected.\n\nWhat it is: CVE-2026-71852 is a medium-severity denial of service vulnerability in Pypdf Project Pypdf, published on 7 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-71852 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- pypdf (PyPI): affected all versions; fixed in 6.15.0\n- pypdf (PyPI): affected all versions; fixed in 6.15.0\n- pypdf (PyPI): affected all versions; fixed in 6.15.0\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-2026-71852/ (Markdown: https://insights.sbomify.com/CVE-2026-71852/index.md)","id":"CVE-2026-71852","markdown":"https://insights.sbomify.com/CVE-2026-71852/index.md","name":"CVE-2026-71852","record":{"aliases":["CLEANSTART-2026-YL68876","DEBIAN-CVE-2026-71852","ECHO-d342-478d-0776","GHSA-fwg2-594c-jp42","MINI-26v6-65rj-4p8h","MINI-2j9m-5jfg-8296","MINI-4gpc-7fx6-c6f4","MINI-5qmw-87f7-942w","MINI-7fhx-99xq-fmmr","MINI-7xp3-wgr3-phqg","MINI-8r93-8968-xqwm","MINI-8wmf-48g6-v6wg","MINI-9f98-w84q-3c6g","MINI-h87f-9m53-7hmv","MINI-p7c9-vgv8-rx42","MINI-q37r-xf68-x9qp","MINI-r7xf-5936-9ch2","MINI-w2pc-7x88-6rgr","MINI-wxhq-354p-7m55","PYSEC-2026-3656","UBUNTU-CVE-2026-71852"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Python PDF library","requires_auth":"none","summary":"Attackers can cause denial of service via resource exhaustion in pypdf by crafting PDFs with large CID font width ranges.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"pypdf","vendor":"pypdf_project"}],"cvss":{"score":4.8,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-834","name":"Excessive Iteration"}],"description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/_font.py function Font._collect_cid_character_widths expands unusually large CID font /W width ranges or excessive width entries during text extraction. This issue is fixed in 6.15.0.","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: Possible long runtimes/large memory usage for large CID font width ranges","id":"CVE-2026-71852","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":"OpenAEV has unauthenticated access and missing object-level authorization on player lessons API","id":"CVE-2026-71854"},"packages":[{"ecosystem":"PyPI","fixed":["6.15.0"],"introduced":["0"],"last_affected":[],"package":"pypdf","purl":null,"source":"GHSA-fwg2-594c-jp42"},{"ecosystem":"PyPI","fixed":["6.15.0"],"introduced":["0"],"last_affected":[],"package":"pypdf","purl":"pkg:pypi/pypdf","source":"GHSA-fwg2-594c-jp42"},{"ecosystem":"PyPI","fixed":["6.15.0"],"introduced":["0"],"last_affected":[],"package":"pypdf","purl":"pkg:pypi/pypdf","source":"PYSEC-2026-3656"}],"prev":{"headline":"crypto-js: Insufficient Entropy in Cryptographic Secret Generation via Vulnerable CryptoJS Dependency Chain","id":"CVE-2026-71851"},"products":["pypdf"],"published":"2026-08-07","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-10","vendors":["py-pdf"]},"summary":"Attackers can cause denial of service via resource exhaustion in pypdf by crafting PDFs with large CID font width ranges.","url":"https://insights.sbomify.com/CVE-2026-71852/"}