CVE intelligence and bounded remediation

CVE-2020-4126 — HCL iNotes is susceptible to a sensitive cookie exposure vulnerability

Medium CVSS 5.9

HCL iNotes is susceptible to a sensitive cookie exposure vulnerability. This can allow an unauthenticated remote attacker to capture the cookie by intercepting its transmission within an http session. Fixes are available in HCL Domino and iNotes versions 10.0.1 FP6 and 11.0.1 FP2 and later.

Severity
Medium
CVSS
5.9 (3.1)
Published
2020-12-01
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-311

Affected products

  • hcltech / hcl_inotes
  • hcltech / hcl_inotes / 10.0.1
  • hcltech / hcl_inotes / 11.0.1

Showing 3 representative product identities from 10 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Cryptography, certificate, signature, and channel validation

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Check exposure

  • Inventory affected algorithms, key uses, trust stores, certificate validation settings, random sources, and plaintext channels across clients and services.
  • Determine which secrets, identities, signatures, or data protections depend on the affected primitive or validation path.
  • Check debug, compatibility, fallback, and hostname or audience override settings in build and runtime configuration.

Remediate safely

  • Use a maintained platform cryptographic API with approved algorithms, modes, parameters, randomness, and full peer identity validation.
  • Remove insecure fallback and validation bypasses; separate keys by purpose and load them from managed secret storage.
  • Plan rotation or reissuance for affected keys, certificates, tokens, hashes, or ciphertext and document compatibility sequencing.

Authoritative sources

Complete CVE record and remediation plan

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