{"answers":{"affected":"3 open source packages ship an affected version, including pypdf. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-41312 in the wild and no public exploit code.","fix":"Upgrade pypdf to 6.10.2 or later.","what":"CVE-2026-41312 is a medium-severity denial of service vulnerability in Pypdf Project Pypdf, published on 22 Apr 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-2026-41312 and fix it if it is affected.\n\nWhat it is: CVE-2026-41312 is a medium-severity denial of service vulnerability in Pypdf Project Pypdf, published on 22 Apr 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-2026-41312 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- pypdf (PyPI): affected all versions; fixed in 6.10.2\n- pypdf (PyPI): affected all versions; fixed in 6.10.2\n- pypdf (PyPI): affected all versions; fixed in 6.10.2\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-2026-41312/ (Markdown: https://insights.sbomify.com/CVE-2026-41312/index.md)","id":"CVE-2026-41312","markdown":"https://insights.sbomify.com/CVE-2026-41312/index.md","name":"CVE-2026-41312","record":{"aliases":["DEBIAN-CVE-2026-41312","ECHO-6000-bce7-d021","GHSA-7gw9-cf7v-778f","MINI-w9h7-fhjr-4w44","MINI-wm96-w439-mx43","MINI-xvmj-78ph-fxv7","PYSEC-2026-3011","ROOT-APP-PYPI-CVE-2026-41312","ROOT-APP-PYPI-GHSA-7gw9-cf7v-778f","UBUNTU-CVE-2026-41312"],"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":"An attacker can cause RAM exhaustion and denial of service by crafting a PDF with manipulated FlateDecode predictor parameters in pypdf.","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-789","name":"Memory Allocation with Excessive Size Value"}],"description":"pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to the RAM being exhausted. This requires accessing a stream compressed using `/FlateDecode` with a `/Predictor` unequal 1 and large predictor parameters. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.","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: Manipulated FlateDecode predictor parameters can exhaust RAM","id":"CVE-2026-41312","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":"pypdf: Possible long runtimes for wrong size values in incremental mode","id":"CVE-2026-41313"},"packages":[{"ecosystem":"PyPI","fixed":["6.10.2"],"introduced":["0"],"last_affected":[],"package":"pypdf","purl":null,"source":"GHSA-7gw9-cf7v-778f"},{"ecosystem":"PyPI","fixed":["6.10.2"],"introduced":["0"],"last_affected":[],"package":"pypdf","purl":"pkg:pypi/pypdf","source":"GHSA-7gw9-cf7v-778f"},{"ecosystem":"PyPI","fixed":["6.10.2"],"introduced":["0"],"last_affected":[],"package":"pypdf","purl":"pkg:pypi/pypdf","source":"PYSEC-2026-3011"}],"prev":{"headline":"LiquidJS is vulnerable to Denial of Service via circular block reference in layout","id":"CVE-2026-41311"},"products":["pypdf"],"published":"2026-04-22","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":"2026-04-23","vendors":["py-pdf"]},"summary":"An attacker can cause RAM exhaustion and denial of service by crafting a PDF with manipulated FlateDecode predictor parameters in pypdf.","url":"https://insights.sbomify.com/CVE-2026-41312/"}