{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-23259 exists.","fix":"No fix has been published for CVE-2020-23259 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-23259 is a high-severity vulnerability in Jsish Jsish, published on 4 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-23259 and fix it if it is affected.\n\nWhat it is: CVE-2020-23259 is a high-severity vulnerability in Jsish Jsish, published on 4 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-23259 exists.\n\nAffected product: Jsish Jsish. 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-2020-23259/ (Markdown: https://insights.sbomify.com/CVE-2020-23259/index.md)","id":"CVE-2020-23259","markdown":"https://insights.sbomify.com/CVE-2020-23259/index.md","name":"CVE-2020-23259","record":{"aliases":["GHSA-8g46-vcjj-g5qj"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Jsish JavaScript engine","requires_auth":"none","summary":"An attacker can cause a denial of service in Jsish via a null pointer dereference in the Jsi_Strlen function.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"jsish","vendor":"jsish"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"An issue found in Jsish v.3.0.11 and before allows an attacker to cause a denial of service via the Jsi_Strlen function in the src/jsiChar.c file.","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":"Null dereference in n/a","id":"CVE-2020-23259","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"jsish:jsish","products":["jsish:jsish"],"type":"null_dereference","year":"2020"},"n_packages":0,"n_references":2,"next":{"headline":"Memory corruption in n/a","id":"CVE-2020-23260"},"packages":[],"prev":{"headline":"Denial of service in n/a","id":"CVE-2020-23258"},"products":["n/a"],"published":"2023-04-04","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2025-65570","kev_date_added":null,"published":"2025-12-29"},{"cvss_score":9.8,"headline":"Denial of service in n/a","id":"CVE-2024-24186","kev_date_added":null,"published":"2024-02-07"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2024-24188","kev_date_added":null,"published":"2024-02-07"},{"cvss_score":9.8,"headline":"Use after free in n/a","id":"CVE-2024-24189","kev_date_added":null,"published":"2024-02-07"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2020-22873","kev_date_added":null,"published":"2021-07-13"},{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2020-22874","kev_date_added":null,"published":"2021-07-13"},{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2020-22875","kev_date_added":null,"published":"2021-07-13"}],"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-02-14","vendors":["n/a"]},"summary":"An attacker can cause a denial of service in Jsish via a null pointer dereference in the Jsi_Strlen function.","url":"https://insights.sbomify.com/CVE-2020-23259/"}