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Vulnerability record · CVE-2026-33591 · published 3 August 2026

CVE-2026-33591: Authentication bypass via alternate path vulnerability

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.

10.0 CVSS 4.0 Critical EPSS 0.71% · top 48.2% CWE-288 · Authentication bypass via alternate path Deferred
10.0CVSS 4.0 base score
0.71%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
1 Sep 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-33591), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.