CVE•Published 2026-08-17•Modified 2026-09-08•1 article on news•6 live references•NVD data
CVE-2026-74997Roundcube · Webmail
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
53
Exploit Prediction Scoring System · top 47% of all CVEs
Weaknesses (CWE)
Description
In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the cmd_learn driver of the markasjunk plugin is subject to remote code execution via crafted placeholder replacement values. This issue only affects Roundcube instances using the markasjunk plugin with its cmd_learn driver.
Timeline
Published 2026-08-17
Modified 2026-09-08
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-2026-74997Hosts 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-2026-74997Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-74997Censys host search filtered to this CVE id.
grep.app
CVE-2026-74997Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-74997GitHub code search for direct mentions.
Google dork
"CVE-2026-74997" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-74997 on GitHub.