TI-2026-85924 Aliases CVE-2026-21850 GHSA-5x87-xcx3-67x7

CRLF injection in HCL AION lets attackers inject HTTP headers

LOW 34CWE-113Published 2026-11-06 · Updated 2026-11-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

HCL AION in HCL Software's HCL AION V 2.6.0 does not neutralize CR and LF characters in user-controlled input placed into HTTP response headers, which is CWE-113. A remote attacker without privileges or user interaction can inject headers or split HTTP responses, with low 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 user-controlled input could be included in HTTP response headers without proper neutralization of CR/LF characters. This may allow an attacker to inject headers or split responses, potentially resulting in unintended behavior or security impact under certain conditions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00219 12th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
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-2026-21850
2026-11-06 CISA SSVC decision points changed
2026-11-06 Priority changed: MEDIUM → LOW
2026-11-06 Alias added: GHSA-5x87-xcx3-67x7

References

Other 1

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0135118

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

See all 661 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences