Missing COEP header weakens cross-origin isolation in HCL AION
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200.
Summary
HCL AION is affected by a missing or insecure Cross-Origin-Embedder-Policy (COEP) header, which does not require embedded cross-origin resources to explicitly grant permission. An attacker who can make a victim load such resources may expose sensitive information, while cross-origin isolation is weakened. The CVSS vector indicates a remote attacker with no privileges who needs a user to interact with the page, with limited confidentiality and integrity impact.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
HCL AION is affected by a vulnerability where the Cross-Origin-Embedder-Policy (COEP) header was missing or insecure, so embedded cross-origin resources were not required to explicitly grant permission. This weakens cross-origin isolation, potentially resulting in unintended behavior or security impact under certain conditions.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HCL Software | HCL AION | V 2.6.0 | — | No fix listed | CNA |
- HCL AION VendorHCL Software Affected V 2.6.0 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for HCL AION.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Timeline
- 2026-11-06 Threatist record created from CVE-2026-35112
- 2026-11-06 CISA SSVC decision points changed
- 2026-11-06 Alias added: GHSA-h974-58jw-3p4h
More HCL Software vulnerabilities
- TI-2023-24505 Path Traversal which allows file upload capability affects DRYiCE MyXalytics CVSS 3.1CRITICAL 9.8
- TI-2022-22044 Out-of-bounds write in HCL Software Notes CVSS 3.1CRITICAL 9.8
- TI-2022-22043 Out-of-bounds write in HCL Software Domino CVSS 3.1CRITICAL 9.8
- TI-2022-22042 Out-of-bounds write in HCL Software Notes CVSS 3.1CRITICAL 9.8
- TI-2022-22041 Out-of-bounds write in HCL Software Domino CVSS 3.1CRITICAL 9.8
- TI-2022-22040 Out-of-bounds write in HCL Software Notes CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-35112 · CVE Program
- CVE-2026-35112 · NVD
- FIRST EPSS
- GHSA-h974-58jw-3p4h · GitHub Advisory Database · CC BY 4.0
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