{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-1000874 exists.","fix":"No fix has been published for CVE-2018-1000874 yet. Limit exposure of the affected software until one is available.","what":"CVE-2018-1000874 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Dec 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2018-1000874 and fix it if it is affected.\n\nWhat it is: CVE-2018-1000874 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Dec 2018. An attacker can exploit it over the internet without logging in, 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-2018-1000874 exists.\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-2018-1000874/ (Markdown: https://insights.sbomify.com/CVE-2018-1000874/index.md)","id":"CVE-2018-1000874","markdown":"https://insights.sbomify.com/CVE-2018-1000874/index.md","name":"CVE-2018-1000874","record":{"aliases":["GHSA-gvg5-fmh4-q8jg"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_read","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP markdown parser","requires_auth":"none","summary":"A maliciously crafted markdown payload can execute arbitrary scripts in the context of the user viewing the parsed content, potentially leading to data theft.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"markdown","vendor":"cebe"}],"cvss":{"score":6.1,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"PHP cebe markdown parser version 1.2.0 and earlier contains a Cross Site Scripting (XSS) vulnerability in all distributed parsers allowing a malicious crafted script to be executed that can result in the lose of user data and sensitive user information. This attack can be exploited by crafting a three backtick wrapped payload with a character in front: L: \"```\u003cscript\u003ealert();\u003c/script\u003e```\". NOTE: This has been argued as a non-issue (see references) since it is not the parser's job to sanitize malicious code from a parsed document","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Cross-site scripting in n/a","id":"CVE-2018-1000874","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2018"},"n_packages":0,"n_references":2,"next":{"headline":"Auth bypass in n/a","id":"CVE-2018-1000875"},"packages":[],"prev":{"headline":"Moderate severity vulnerability that affects com.fasterxml.jackson.datatype:jackson-datatype-jsr353","id":"CVE-2018-1000873"},"products":["n/a"],"published":"2018-12-20","related":[],"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-05-06","vendors":["n/a"]},"summary":"A maliciously crafted markdown payload can execute arbitrary scripts in the context of the user viewing the parsed content, potentially leading to data theft.","url":"https://insights.sbomify.com/CVE-2018-1000874/"}