Common Weakness Enumeration

CWE-523

Unprotected Transport of Credentials

Login pages do not use adequate measures to protect the user name and password while they are in transit from the client to the server.

CVE-2026-8673 (GCVE-0-2026-8673)

Vulnerability from cvelistv5 – Published: 2026-05-22 13:18 – Updated: 2026-05-22 15:04
VLAI
Title
Password re-initialization mechanism sends passwords in plain text
Summary
Unprotected transport of credentials vulnerability in syslink software AG Avantra on Linux, Windows allows Sniffing Attacks. This issue affects Avantra: before 25.3.0.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-523 - Unprotected transport of credentials
Assigner
References
Impacted products
Vendor Product Version
syslink software AG Avantra Affected: 0 , < 25.3.0 (semver)
Create a notification for this product.
Credits
Vicxer Inc.
Show details on NVD website
To clipboard 

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Mitigation

Phases: Operation, System Configuration

Description:

  • Enforce SSL use for the login page or any page used to transmit user credentials or other sensitive information. Even if the entire site does not use SSL, it MUST use SSL for login. Additionally, to help prevent phishing attacks, make sure that SSL serves the login page. SSL allows the user to verify the identity of the server to which they are connecting. If the SSL serves login page, the user can be certain they are talking to the proper end system. A phishing attack would typically redirect a user to a site that does not have a valid trusted server certificate issued from an authorized supplier.
CAPEC-102: Session Sidejacking

Session sidejacking takes advantage of an unencrypted communication channel between a victim and target system. The attacker sniffs traffic on a network looking for session tokens in unencrypted traffic. Once a session token is captured, the attacker performs malicious actions by using the stolen token with the targeted application to impersonate the victim. This attack is a specific method of session hijacking, which is exploiting a valid session token to gain unauthorized access to a target system or information. Other methods to perform a session hijacking are session fixation, cross-site scripting, or compromising a user or server machine and stealing the session token.

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