CVE-2026-114716

LOWCVSS 8.5 · HIGH

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. rcmail_sendmail::extract_inline_images() used the media type taken from an inline image data URI without validating it, so a remote authenticated attacker could inject arbitrary MIME part headers into the outgoing message by placing CRLF sequences in that media type. Upstream fixed this in the commit “Fix mail header injection via media type in an inline image data URI”, which validates the media type with rcube_mime::is_mimetype_valid().

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-99

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Deep dive

Full discourse1 post
  • CERT-PY@CERTpy

    ⚠️ Vulnerabilidades en Roundcube Webmail ❗ CVE-2026-114727 ❗ CVE-2026-114716 ➡️ Más info: https://www.cert.gov.py/vulnerabilidades-en-roundcube-webmail-2/ https://t.co/zuUqsetutB

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