{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-27839 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-27839 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-27839 is a medium-severity vulnerability in n/a, published on 3 Mar 2021. 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-2021-27839 and fix it if it is affected.\n\nWhat it is: CVE-2021-27839 is a medium-severity vulnerability in n/a, published on 3 Mar 2021. 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-2021-27839 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2021-27839/ (Markdown: https://insights.sbomify.com/CVE-2021-27839/index.md)","id":"CVE-2021-27839","markdown":"https://insights.sbomify.com/CVE-2021-27839/index.md","name":"CVE-2021-27839","record":{"aliases":["GHSA-g26q-ppp8-jj4r"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Online Invoicing System","requires_auth":"none","summary":"Attackers can inject malicious formulas into CSV exports to redirect admins or disclose unauthorized client data in the Online Invoicing System.","user_interaction":"required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"online_invoicing_system","vendor":"bigprof"}],"cvss":{"score":4.4,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-1236","name":"Improper Neutralization of Formula Elements in a CSV File"}],"description":"A CSV injection vulnerability found in Online Invoicing System (OIS) 4.3 and below can be exploited by users to perform malicious actions such as redirecting admins to unknown or harmful websites, or disclosing other clients' details that the user did not have access to.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Other in n/a","id":"CVE-2021-27839","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Denial of service in n/a","id":"CVE-2021-27845"},"packages":[],"prev":{"headline":"Null dereference in n/a","id":"CVE-2021-27836"},"products":["n/a"],"published":"2021-03-03","related":[{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2020-35674","kev_date_added":null,"published":"2020-12-24"},{"cvss_score":8.8,"headline":"Cross-site request forgery in n/a","id":"CVE-2020-35675","kev_date_added":null,"published":"2020-12-24"},{"cvss_score":7.6,"headline":"XSS in description field","id":"CVE-2021-21260","kev_date_added":null,"published":"2021-01-22"},{"cvss_score":6.3,"headline":"Cross-site Scripting vulnerability in BigProf products","id":"CVE-2023-6426","kev_date_added":null,"published":"2023-11-30"},{"cvss_score":6.3,"headline":"Cross-site Scripting vulnerability in BigProf products","id":"CVE-2023-6427","kev_date_added":null,"published":"2023-11-30"},{"cvss_score":6.3,"headline":"Cross-site Scripting vulnerability in BigProf products","id":"CVE-2023-6428","kev_date_added":null,"published":"2023-11-30"},{"cvss_score":6.3,"headline":"Cross-site Scripting vulnerability in BigProf products","id":"CVE-2023-6429","kev_date_added":null,"published":"2023-11-30"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"Attackers can inject malicious formulas into CSV exports to redirect admins or disclose unauthorized client data in the Online Invoicing System.","url":"https://insights.sbomify.com/CVE-2021-27839/"}