Description

IBM Security Verify Access 10.0 through 10.0.9.2 and IBM Verify Identity Access 11.0 through 11.0.3 and IBM Verify Identity Access Container 11.0 through 11.0.3 Reverse Proxy in certain configurations may provide weaker than expected cryptographic validation of user supplied data.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.8",
  "pubDate": "2026-08-12T21:17:36.663Z",
  "pubdate": "2026-08-12T21:17:36.663Z",
  "executiveSummary": "A cryptographic validation vulnerability has been identified within the Reverse Proxy component of IBM Security Verify Access and IBM Verify Identity Access. This vulnerability arises when the affected systems are operated in specific, non-default configurations, leading to the provision of weaker than expected cryptographic validation mechanisms when processing user-supplied data. The primary impact of this cryptographic weakness involves the potential compromise of data integrity and confidentiality protections enforced by the reverse proxy during session handling or data transit. Affected systems include IBM Security Verify Access versions 10.0 through 10.0.9.2, IBM Verify Identity Access versions 11.0 through 11.0.3, and IBM Verify Identity Access Container versions 11.0 through 11.0.3. The risk implications include the potential bypass of security controls dependent on robust cryptographic verification, allowing malicious actors to manipulate data or forge inputs that would otherwise be rejected by stricter cryptographic checks. Exploitation of this flaw generally requires an attacker to interact with the reverse proxy component under the specific vulnerable configurations, potentially necessitating network positioning to intercept or inject user-supplied data. No specific privileges or authentication are inherently mandated for the initial data manipulation vector, provided the attacker can reach the vulnerable endpoint under the specified configuration parameters.",
  "technicalDetails": "The vulnerability resides within the Reverse Proxy component of the affected IBM security products. Specifically, under certain architectural or administrative configurations, the underlying cryptographic routines fail to enforce sufficient validation standards when evaluating user-supplied data inputs. The root cause stems from improper or insufficiently rigorous cryptographic algorithms, padding validation, or signature verification checks applied to incoming payloads processed at the reverse proxy layer. During standard operation, the reverse proxy is responsible for terminating client connections, inspecting traffic, and validating cryptographic tokens or parameters associated with user sessions and requests. When configured in the vulnerable state, the validation logic exhibits a deficiency in cryptographic strength, allowing anomalous or maliciously crafted data inputs to pass validation checks that should logically fail. The attack flow commences when an unauthorized external actor crafts a specific payload or manipulates user-supplied data intended for consumption by the reverse proxy. Due to the weakened cryptographic validation, the proxy incorrectly evaluates the integrity or authenticity of the provided data, accepting inputs that lack proper cryptographic provenance or utilizing substandard validation parameters. This allows the attacker to bypass cryptographic safeguards designed to protect sensitive state information or authentication tokens. The affected component is strictly the Reverse Proxy module across IBM Security Verify Access 10.0 through 10.0.9.2, IBM Verify Identity Access 11.0 through 11.0.3, and IBM Verify Identity Access Container 11.0 through 11.0.3. Network exposure is inherent to any deployment where the reverse proxy interfaces with untrusted external networks or clients. Depending on the exact nature of the weakened validation, successful exploitation can lead to downstream state manipulation, unauthorized access to protected resources, or the circumvention of security assertions, ultimately undermining the trust boundary enforced by the reverse proxy."
}