{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-74998 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-74998 is a high-severity cross-site scripting vulnerability in Roundcube Webmail, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-74998 and fix it if it is affected.\n\nWhat it is: CVE-2026-74998 is a high-severity cross-site scripting vulnerability in Roundcube Webmail, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-74998 in the wild and no public exploit code.\n\nAffected product: Roundcube Webmail. 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-2026-74998/ (Markdown: https://insights.sbomify.com/CVE-2026-74998/index.md)","id":"CVE-2026-74998","markdown":"https://insights.sbomify.com/CVE-2026-74998/index.md","name":"CVE-2026-74998","record":{"aliases":["DEBIAN-CVE-2026-74998","GHSA-6pvc-73xq-46hq","UBUNTU-CVE-2026-74998"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Roundcube Webmail","requires_auth":"none","summary":"Attackers can exploit unvalidated CSS proxy responses to perform cross-site scripting or disclose information via MIME sniffing in Roundcube Webmail.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"webmail","vendor":"roundcube"}],"cvss":{"score":7.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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":"In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, responses from the CSS (Cascading Style Sheets) proxy were not validated, which may result in information disclosure or XSS (cross-site scripting) via MIME sniffing.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Cross-site scripting in Webmail","id":"CVE-2026-74998","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"roundcube:webmail","products":["roundcube:webmail"],"type":"xss","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Cross-site scripting in Webmail","id":"CVE-2026-74999"},"packages":[],"prev":{"headline":"Command injection in Webmail","id":"CVE-2026-74997"},"products":["Webmail"],"published":"2026-08-17","related":[{"cvss_score":9.3,"headline":"RoundCube Webmail Cross-Site Scripting","id":"CVE-2024-42009","kev_date_added":"2025-06-09","published":"2024-08-05"},{"cvss_score":7.2,"headline":"RoundCube Webmail Cross-site Scripting","id":"CVE-2025-68461","kev_date_added":"2026-02-20","published":"2025-12-18"},{"cvss_score":10,"headline":"PHPMailer susceptible to arbitrary code execution","id":"CVE-2008-5619","kev_date_added":null,"published":"2008-12-17"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2024-37385","kev_date_added":null,"published":"2024-06-07"},{"cvss_score":9.3,"headline":"Cross-site scripting in n/a","id":"CVE-2024-42008","kev_date_added":null,"published":"2024-08-05"},{"cvss_score":8.8,"headline":"Command injection in Webmail","id":"CVE-2026-74997","kev_date_added":null,"published":"2026-08-17"},{"cvss_score":8.8,"headline":"Privilege escalation in n/a","id":"CVE-2017-8114","kev_date_added":null,"published":"2017-04-29"}],"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-17","vendors":["Roundcube"]},"summary":"Attackers can exploit unvalidated CSS proxy responses to perform cross-site scripting or disclose information via MIME sniffing in Roundcube Webmail.","url":"https://insights.sbomify.com/CVE-2026-74998/"}