Medium severity · published Jun 5, 2026
CVE-2026-21826
HCL Digital Experience and HCL Digital Experience Compose could be susceptible to Host header injection
6.1
CVSS
0.1%
EPSS
No
On KEV
Description
HCL Digital Experience and HCL Digital Experience Compose could be susceptible to Host header injection. An attacker can manipulate the Host header and cause the application to behave in unexpected ways.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DE
Digital Experience & DX Compose · HCLSoftware
9.5 · source: vendor
DE
Digital Experience · Hcltech
9.5; 9.5; 9.5; 9.5; 9.5; 9.5; +34 more · source: NVD
DE
Digital Experience Compose · Hcltech
9.5; 9.5; 9.5; 9.5; 9.5; 9.5; +6 more · source: NVD
Affected product
DE
Digital Experience & DX Compose
HCLSoftware