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.
CVE-2026-9592
This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(low)
- EG Risk
- —
- EPSS
- 4.9%
- KEV
- Not listed
Published
July 17, 2026
Last Modified
July 17, 2026
Advisory Details (1)
Auto-updated Jul 17, 202615.0.5 Bugfix Release Release
https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#remove-login-redirect-to-prevent-disclosure-of-session-token-informationVendor Advisories for CVE-2026-9592(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 62× in last 7d / 62× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-21 15:25 UTCEPSS rescore
- 2026-07-21 15:25 UTCEPSS rescore
- 2026-07-20 17:08 UTCEPSS rescore
- 2026-07-19 14:31 UTCEPSS rescore
- 2026-07-19 02:29 UTCEPSS rescore
- 2026-07-17 18:26 UTCEG score recompute
- 2026-07-17 18:25 UTCGHSA enrichment
- 2026-07-17 17:12 UTCGHSA enrichment
- 2026-07-17 17:02 UTCGHSA enrichment
- 2026-07-17 17:00 UTCGHSA enrichment
- 2026-07-17 16:42 UTCGHSA enrichment
- 2026-07-17 16:40 UTCGHSA enrichment
- 2026-07-17 16:39 UTCGHSA enrichment
- 2026-07-17 16:39 UTCGHSA enrichment
- 2026-07-17 16:38 UTCGHSA enrichment
- 2026-07-17 16:37 UTCGHSA enrichment
- 2026-07-17 16:36 UTCGHSA enrichment
- 2026-07-17 16:34 UTCGHSA enrichment
- 2026-07-17 16:33 UTCGHSA enrichment
- 2026-07-17 16:32 UTCGHSA enrichment
- 2026-07-17 16:31 UTCGHSA enrichment
- 2026-07-17 16:30 UTCGHSA enrichment
- 2026-07-17 16:29 UTCGHSA enrichment
- 2026-07-17 16:28 UTCGHSA enrichment
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- 2026-07-17 16:27 UTCGHSA enrichment
- 2026-07-17 16:26 UTCGHSA enrichment
- 2026-07-17 16:25 UTCGHSA enrichment
- 2026-07-17 16:24 UTCGHSA enrichment
- 2026-07-17 16:23 UTCGHSA enrichment
- 2026-07-17 16:22 UTCGHSA enrichment
- 2026-07-17 16:21 UTCGHSA enrichment
- 2026-07-17 16:19 UTCGHSA enrichment
- 2026-07-17 16:18 UTCGHSA enrichment
- 2026-07-17 16:17 UTCGHSA enrichment
- 2026-07-17 16:16 UTCGHSA enrichment
- 2026-07-17 16:15 UTCGHSA enrichment
- 2026-07-17 16:14 UTCGHSA enrichment
- 2026-07-17 16:14 UTCGHSA enrichment
- 2026-07-17 16:13 UTCGHSA enrichment
- 2026-07-17 16:12 UTCGHSA enrichment
- 2026-07-17 16:11 UTCGHSA enrichment
- 2026-07-17 16:09 UTCGHSA enrichment
- 2026-07-17 16:08 UTCGHSA enrichment
- 2026-07-17 16:07 UTCGHSA enrichment
- 2026-07-17 16:06 UTCGHSA enrichment
- 2026-07-17 16:05 UTCGHSA enrichment
- 2026-07-17 16:04 UTCGHSA enrichment
- 2026-07-17 16:03 UTCGHSA enrichment
- 2026-07-17 16:02 UTCGHSA enrichment
- 2026-07-17 16:00 UTCGHSA enrichment
- 2026-07-17 15:59 UTCGHSA enrichment
- 2026-07-17 15:58 UTCGHSA enrichment
- 2026-07-17 15:57 UTCGHSA enrichment
- 2026-07-17 15:56 UTCGHSA enrichment
- 2026-07-17 15:55 UTCGHSA enrichment
- 2026-07-17 15:54 UTCGHSA enrichment
- 2026-07-17 15:53 UTCGHSA enrichment
- 2026-07-17 15:52 UTCGHSA enrichment
- 2026-07-17 15:51 UTCGHSA enrichment
- 2026-07-17 14:10 UTCEG score recompute
- 2026-07-17 14:09 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-9592?
When was CVE-2026-9592 disclosed?
Is CVE-2026-9592 actively exploited?
What is the CVSS score of CVE-2026-9592?
How do I remediate CVE-2026-9592?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-9592
Is Your Infrastructure Affected by CVE-2026-9592?
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