Vulnerability details

CVE-2026-33591

Tranquil IT Systems WAPT Server

Authentication bypass on WaptServer

CVSS 4.0

10.0Critical

Official description

A vulnerability in Wapt Server before version 2.6.1.17813 allows a remote unauthenticated attacker to bypass security restriction using a specially crafted packet and retrieve a valid session token for the targeted account.

CVSS scores

Score	Version	Source	Vector
10.0Critical	4.0	CVEProject cvelistV5 (CNA) (ENISA)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`

Affected products

Vendor	Product	Versions	Source
Tranquil IT Systems	WAPT Server	2.6.0.16767 ≤ v ≤ 2.6.1.17787	CVEProject cvelistV5 (CNA)

References and advisories

https://www.wapt.fr/en/doc/wapt-changelog.html#wapt-2-6-0-16856-2026-06-09 release-notes
https://www.wapt.fr/en/doc/wapt-changelog.html#wapt-2-6-1-17813-2026-06-09 release-notes
https://www.wapt.fr/en/doc/wapt-security-bulletin.html vendor-advisory

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Details

Published: 2026-08-03
Last updated: 2026-08-03
State: Published
Assigner (CNA): ENISA

Exploit prediction (EPSS)

0.71%

Probability of exploitation in 30 days

53.8%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-288
Authentication bypass using an alternate path or channel