{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47877 exists.","fix":"No fix has been published for CVE-2021-47877 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-47877 is a medium-severity denial of service vulnerability in GeoGebra Graphing Calculato‪r‬, published on 21 Jan 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-2021-47877 and fix it if it is affected.\n\nWhat it is: CVE-2021-47877 is a medium-severity denial of service vulnerability in GeoGebra Graphing Calculato‪r‬, published on 21 Jan 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47877 exists.\n\nAffected product: GeoGebra Graphing Calculato‪r‬. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2021-47877/ (Markdown: https://insights.sbomify.com/CVE-2021-47877/index.md)","id":"CVE-2021-47877","markdown":"https://insights.sbomify.com/CVE-2021-47877/index.md","name":"CVE-2021-47877","record":{"aliases":["GHSA-4f8m-8mgg-8vf4"],"analysis":{"component_type":"desktop_application","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"GeoGebra Graphing Calculator","requires_auth":"none","summary":"Attackers can crash the GeoGebra Graphing Calculator by inputting an oversized buffer, causing the application to become unresponsive.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":6.7,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"GeoGebra Graphing Calculator 6.0.631.0 contains a denial of service vulnerability that allows attackers to crash the application by inputting an oversized buffer. Attackers can generate a payload of 8000 repeated characters to overwhelm the input field and cause the application to become unresponsive.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"GeoGebra Graphing Calculato‪r‬ 6.0.631.0 - Denial Of Service","id":"CVE-2021-47877","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"eBeam Education Suite 2.5.0.9 - 'eBeam Device Service' Unquoted Service Path","id":"CVE-2021-47878"},"packages":[],"prev":{"headline":"GeoGebra Classic 5.0.631.0-d - Denial of Service","id":"CVE-2021-47876"},"products":["GeoGebra Graphing Calculato‪r‬"],"published":"2026-01-21","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-22","vendors":["GeoGebra"]},"summary":"Attackers can crash the GeoGebra Graphing Calculator by inputting an oversized buffer, causing the application to become unresponsive.","url":"https://insights.sbomify.com/CVE-2021-47877/"}