{"answers":{"affected":"2 open source packages ship an affected version, including roundcube/roundcubemail. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-35544 in the wild and no public exploit code.","fix":"Upgrade roundcube/roundcubemail to 1.7-rc5 or later.","what":"CVE-2026-35544 is a medium-severity vulnerability in Roundcube Webmail, published on 3 Apr 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-2026-35544 and fix it if it is affected.\n\nWhat it is: CVE-2026-35544 is a medium-severity vulnerability in Roundcube Webmail, published on 3 Apr 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-2026-35544 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- roundcube/roundcubemail (Packagist): affected from 1.7-beta; fixed in 1.7-rc5\n- roundcube/roundcubemail (Packagist): affected from 1.7-beta; fixed in 1.7-rc5\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-2026-35544/ (Markdown: https://insights.sbomify.com/CVE-2026-35544/index.md)","id":"CVE-2026-35544","markdown":"https://insights.sbomify.com/CVE-2026-35544/index.md","name":"CVE-2026-35544","record":{"aliases":["DEBIAN-CVE-2026-35544","GHSA-xpqh-grpw-4xmg","UBUNTU-CVE-2026-35544"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Roundcube Webmail","requires_auth":"none","summary":"Attackers can bypass CSS sanitization in Roundcube Webmail using !important rules, potentially enabling UI redressing or content spoofing attacks.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"webmail","vendor":"roundcube"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-669","name":"Incorrect Resource Transfer Between Spheres"}],"description":"An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to a fixed-position mitigation bypass via the use of !important.","ecosystems":["Packagist"],"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":"Roundcube Webmail: Insufficient CSS sanitization in HTML e-mail messages","id":"CVE-2026-35544","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"roundcube:webmail","products":["roundcube:webmail"],"type":"security_feature_bypass","year":"2026"},"n_packages":2,"n_references":7,"next":{"headline":"Roundcube Webmail: Remote image blocking feature can be bypassed via SVG content in an e-mail message","id":"CVE-2026-35545"},"packages":[{"ecosystem":"Packagist","fixed":["1.7-rc5"],"introduced":["1.7-beta"],"last_affected":[],"package":"roundcube/roundcubemail","purl":null,"source":"GHSA-xpqh-grpw-4xmg"},{"ecosystem":"Packagist","fixed":["1.7-rc5"],"introduced":["1.7-beta"],"last_affected":[],"package":"roundcube/roundcubemail","purl":"pkg:composer/roundcube/roundcubemail","source":"GHSA-xpqh-grpw-4xmg"}],"prev":{"headline":"Roundcube Webmail: Bypass of remote image blocking via SVG content (with animate attributes) in an e-mail message","id":"CVE-2026-35543"},"products":["Webmail"],"published":"2026-04-03","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":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-03","vendors":["Roundcube"]},"summary":"Attackers can bypass CSS sanitization in Roundcube Webmail using !important rules, potentially enabling UI redressing or content spoofing attacks.","url":"https://insights.sbomify.com/CVE-2026-35544/"}