Browser XSS-control bypass via obsolete header
Published May 6, 2026 · Updated May 6, 2026
Insecure security headers in HCL DFX Analytics 3.1 and earlier allow remote authenticated users to bypass browser XSS controls. HTTP responses apply the obsolete X-XSS-Protection header rather than enforcing equivalent script restrictions through a robust Content Security Policy. The high-complexity path requires authenticated network access and can expose browser-rendered data, with no availability impact reported.
Summary
What happened
Insecure security headers in HCL DFX Analytics 3.1 and earlier allow remote authenticated users to bypass browser XSS controls. HTTP responses apply the obsolete X-XSS-Protection header rather than enforcing equivalent script restrictions through a robust Content Security Policy. The high-complexity path requires authenticated network access and can expose browser-rendered data, with no availability impact reported.
The record
- CVE
- CVE-2025-59854
- Published
- May 6, 2026
- Updated
- May 6, 2026
- Vendor
- HCLSoftware
- Product
- HCL DFX Analytics
- Classifications
- CWE-79, CWE-80
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 6, 2026CVE publishedPublication date reported by the CVE source.
- May 6, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.1 and below
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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