CVE-2026-29137CWE-20

Long Subject Untagging

Medium · published April 2, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
22.6
In the wild
Unconfirmed
What it is

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to hide security tags from users by crafting a long subject.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
EPSS
0.00310 · 22.6th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-04-02T08:42Z
EPSS history
Timeline
  • 02 APR 08:42Z
    Long Subject Untagging
    cvelistv5