CVE-2026-33591

Authentication bypass on WaptServer

Published Aug 3, 2026 CVSS 4.0 · 10 Critical EPSS < 1% KEV · Not listed
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.

Analysis

AI-generated

Technical impact

A vulnerability in Tranquil IT Systems' WAPT Server versions earlier than 2.6.1.17813 allows a remote unauthenticated attacker to bypass authentication controls. By sending a specially crafted packet, the server issues a valid session token for the targeted account, effectively hijacking that account’s session. This results in the attacker gaining all privileges associated with the victim account. Based on the description, it is inferred that the attacker can perform actions as the victim without needing to obtain or guess credentials. The flaw reflects a typical CWE‑288 weakness involving improper validation of authentication packets.

Affected Systems

The affected system is the WAPT Server from Tranquil IT Systems. Any installation running a version prior to 2.6.1.17813 is vulnerable. Organizations should verify their server version and assess whether they remain exposed.

Risk and Exploitability

The CVSS score of 10 indicates critical severity, with no authentication required and a remote attack vector. EPSS data is not available, and the issue is not listed in CISA KEV; however, the nature of the bypass strongly suggests ample motivation for attackers who can discover the packet. The likely attack vector is over the network to the WAPT Server’s management or API endpoints. Because the vulnerability is accessible remotely and requires no pre‑existing credentials, the risk to exposed deployments is high, warranting immediate remediation to prevent credential theft and potential lateral movement.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade the WAPT Server to version 2.6.1.17813 or newer, which contains the authentication bypass fix.
  • Restart the WAPT Server service to ensure the patched version is running and to clear any cached session data.
  • Restrict network access to the WAPT Server’s management interface and API, allowing connections only from trusted administrative hosts or internal networks until the patch is fully deployed.

Generated by OpenCVE AI on August 4, 2026 at 21:11 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Tranquil It Systems
Tranquil It Systems wapt Server
Vendors & Products Tranquil It Systems
Tranquil It Systems wapt Server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Authentication bypass on WaptServer
Weaknesses CWE-288
References
Metrics cvssV4_0

{'score': 10, 'vector': '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'}

Weaknesses
  • CWE-288

    Authentication Bypass Using an Alternate Path or Channel

Sources

Status
PUBLISHED
Assigner
ENISA
Published
Updated
Aug 3, 2026, 10:51 AM
Reserved
Mar 23, 2026, 12:53 PM
Status
Deferred
Published
Aug 3, 2026, 10:16 AM
Modified
Oct 23, 2026, 10:10 PM