Vulnerability details

CVE-2026-9592

Sensitive Information Disclosure in HTTP header

CVSS 4.0

7.5High

Official description

SEPPmail Secure Email Gateway & SEPPmail Cloud before version 15.0.4.2 allows an attacker to replay & hijack a user session in the GINA web portal, as the session token is disclosed inside the URL and a HTTP header.

CVSS scores

Score	Version	Source	Vector
7.5High	4.0	CVEProject cvelistV5 (CNA) (NCSC.ch)	`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U`

Affected products

Vendor	Product	Versions	Source
No product information recorded.

References and advisories

https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#remove-login-redirect-to-prevent-disclosure-of-session-token-information

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Details

Published: 2026-07-17
Last updated: 2026-07-17
State: Published
Assigner (CNA): NCSC.ch

Exploit prediction (EPSS)

0.24%

Probability of exploitation in 30 days

15.3%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-598
Use of GET request method with sensitive query strings