CVE-2026-35149: HCL DFXServer authentication bypass via response manipulation

CVE-2026-35149 · Severity: high · CVSS 8.2 · Published 2026-07-16

HCL DFXServer is vulnerable to a security flaw that allows unauthorized individuals to bypass login requirements. By intercepting and modifying the server's responses during the login process, an attacker can gain full access to the application without providing valid credentials. This could lead to the exposure of sensitive data and unauthorized control over the server's functions.

Technologies: HCL Software DFXServer. Vendors: HCL Software.

Quick answers

Is CVE-2026-35149 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-35149 being exploited in the wild.
How severe is CVE-2026-35149?
High severity, with a CVSS score of 8.2, published 16 July 2026.
Which products and versions are affected?
HCL Software DFXServer 2.5 and below.
Is there a fix for CVE-2026-35149?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-35149 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-35149?
Check whether you run HCL Software DFXServer at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

HCL DFXServer versions 2.5 and below are vulnerable to an authentication bypass (CWE-294) via server response manipulation. The vulnerability exists because the application incorrectly trusts or fails to properly validate authentication responses that have been intercepted and altered by an attacker. A remote, unauthenticated attacker can exploit this by manipulating the server's response to indicate a successful login, thereby gaining unauthorized access to the application. The attack is carried out over the network with low complexity and requires no user interaction. HCL Software has acknowledged the issue in security bulletin KB0131782.

Affected products

  • HCL Software DFXServer 2.5 and below

Timeline

  • 2026-07-16: disclosed
  • 2026-07-16: advisory

References

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