{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47827 exists.","fix":"No fix has been published for CVE-2021-47827 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-47827 is a medium-severity denial of service vulnerability in WebSSH for iOS, published on 16 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-2021-47827 and fix it if it is affected.\n\nWhat it is: CVE-2021-47827 is a medium-severity denial of service vulnerability in WebSSH for iOS, published on 16 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-2021-47827 exists.\n\nAffected product: WebSSH for iOS. 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-2021-47827/ (Markdown: https://insights.sbomify.com/CVE-2021-47827/index.md)","id":"CVE-2021-47827","markdown":"https://insights.sbomify.com/CVE-2021-47827/index.md","name":"CVE-2021-47827","record":{"aliases":["GHSA-cfgg-734h-mqgc"],"analysis":{"component_type":"mobile_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"iOS SSH client","requires_auth":"none","summary":"Attackers can crash the WebSSH iOS application by pasting malformed input into the mashREPL tool, causing a denial of service.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":4.6,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-1284","name":"Improper Validation of Specified Quantity in Input"}],"description":"WebSSH for iOS 14.16.10 contains a denial of service vulnerability in the mashREPL tool that allows attackers to crash the application by pasting malformed input. Attackers can trigger the vulnerability by copying a 300-character buffer of repeated 'A' characters into the mashREPL input field, causing the application to crash.","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":"WebSSH for iOS 14.16.10 - 'mashREPL' Denial of Service","id":"CVE-2021-47827","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":"BOOTP Turbo 2.0.0.1253 - 'bootpt.exe' Unquoted Service Path","id":"CVE-2021-47828"},"packages":[],"prev":{"headline":"Acer Backup Manager Module 3.0.0.99 - 'IScheduleSvc.exe' Unquoted Service Path","id":"CVE-2021-47826"},"products":["WebSSH for iOS"],"published":"2026-01-16","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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-16","vendors":["WebSSH"]},"summary":"Attackers can crash the WebSSH iOS application by pasting malformed input into the mashREPL tool, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2021-47827/"}