CVE-2019-10740

unknown
Published — · Modified —
CVSS v3
CVSS v2
VIR risk

Description

In Roundcube Webmail before 1.3.10, an attacker in possession of S/MIME or PGP encrypted emails can wrap them as sub-parts within a crafted multipart email. The encrypted part(s) can further be hidden using HTML/CSS or ASCII newline characters. This modified multipart email can be re-sent by the attacker to the intended receiver. If the receiver replies to this (benign looking) email, they unknowingly leak the plaintext of the encrypted message part(s) back to the attacker.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2019-10740

OS impact

OSVersionStatusFixed in
debian debianbookwormfixed1.3.10+dfsg.1-1
debian debianbullseyefixed1.3.10+dfsg.1-1
debian debiansidfixed1.3.10+dfsg.1-1
debian debiantrixiefixed1.3.10+dfsg.1-1

References

Verify integrity in audit chain (admin only). AS-IS.