CVE•Published 2026-04-03•Modified 2026-04-09•0 articles on news•5 live references•NVD data
CVE-2026-35544Roundcube · Webmail
Vulnerability data via NVD (ingested)
CVSS v3.1
5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS percentile
—
Weaknesses (CWE)
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.
Timeline
Published 2026-04-03
Modified 2026-04-09
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-35544Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Roundcube Webmail"All exposed Roundcube Webmail instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Webmail"HTTP body or banner mentions "Webmail" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-35544Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-35544Censys host search filtered to this CVE id.
grep.app
CVE-2026-35544Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-35544GitHub code search for direct mentions.
Google dork
"CVE-2026-35544" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (1)
We haven't classified any articles referencing CVE-2026-35544 yet. The external references above still apply.