{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-26239 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-26239 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-26239 is a high-severity cross-site scripting vulnerability in ScratchAddons, published on 23 Nov 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-26239 and fix it if it is affected.\n\nWhat it is: CVE-2020-26239 is a high-severity cross-site scripting vulnerability in ScratchAddons, published on 23 Nov 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2020-26239 in the wild and no public exploit code.\n\nAffected product: ScratchAddons. 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-2020-26239/ (Markdown: https://insights.sbomify.com/CVE-2020-26239/index.md)","id":"CVE-2020-26239","markdown":"https://insights.sbomify.com/CVE-2020-26239/index.md","name":"CVE-2020-26239","record":{"aliases":["GHSA-6qfq-px3r-xj4p"],"analysis":{"component_type":"browser","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Scratch browser extension","requires_auth":"low_privilege","summary":"A DOM-based XSS vulnerability in the Scratch Addons browser extension allows attackers to execute arbitrary scripts when a victim visits a malicious website.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"scratch_addons","vendor":"scratchaddons"}],"cvss":{"score":7.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Scratch Addons is a WebExtension that supports both Chrome and Firefox. Scratch Addons before version 1.3.2 is vulnerable to DOM-based XSS. If the victim visited a specific website, the More Links addon of the Scratch Addons extension used incorrect regular expression which caused the HTML-escaped values to be unescaped, leading to XSS. Scratch Addons version 1.3.2 fixes the bug. The extension will be automatically updated by the browser. More Links addon can be disabled via the option of the extension.","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":"Cross-Site Scripting in Scratch browser addons","id":"CVE-2020-26239","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2020"},"n_packages":0,"n_references":4,"next":{"headline":"Erroneous Proof of Work calculation in geth","id":"CVE-2020-26240"},"packages":[],"prev":{"headline":"Critical vulnerability found in cron-utils","id":"CVE-2020-26238"},"products":["ScratchAddons"],"published":"2020-11-23","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["ScratchAddons"]},"summary":"A DOM-based XSS vulnerability in the Scratch Addons browser extension allows attackers to execute arbitrary scripts when a victim visits a malicious website.","url":"https://insights.sbomify.com/CVE-2020-26239/"}