CVE-2026-114726CWE-99

CVE-2026-114726

Medium · published October 22, 2026

CVSS v3.1
5.8
EPSS
0%
Percentile
24.9
In the wild
Unconfirmed
What it is

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability in the Bounce (resend) action. rcube_mime::decode_address_list() did not strip control characters from the decoded display name, so a received message whose From display-name carries CRLF sequences in an encoded word could inject arbitrary headers into the message emitted when the user bounces it. Upstream fixed this in the commit “Fix mail header injection via the From display-name in the Bounce (resend) action”.

The record
Technical detail
CVSS v3.1
5.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00330 · 24.9th percentile
Weakness
CWE-99 · Improper Control of Resource Identifiers ('Resource Injection')
Published
2026-10-22T06:17Z
References (6)
https://bugs.debian.org/1151279 · [email protected]https://github.com/roundcube/roundcubemail/commit/3a136465c965776a5f636587187626985dae4f3b · [email protected]https://github.com/roundcube/roundcubemail/commit/d3a35545fdaf72b02a9a4d670064895488e9d9d0 · [email protected]https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 · [email protected]https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 · [email protected]https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 · [email protected]
EPSS history
Timeline
  • 23 OCT 03:55Z
    EPSS moved — → 0%
    epss
  • 22 OCT 01:55Z
    Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability in the Bounce (resend) action
    cvelistv5
  • 22 OCT 01:55Z
    Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability in the Bounce (resend) action
    cvelistv5