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CVE-2026-42272

UNKNOWN · CVSS N/A EPSS 0.02% Public Exploit

Source: NVD + CISA KEV + EPSS · Published: 2026-05-08 · Last synced: 2026-06-06

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Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-42272
Severity
UNKNOWN
CVSS
N/A
EPSS
0.02%

Original NVD Description

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall handles URL-encoded slashes (%2F) in a case-sensitive manner, while percent-encoding is defined to be case-insensitive. As a result, the lowercase equivalent (%2f) is not recognized and therefore not processed as expected when allow_encoded_slashes is set to off (the default setting). This discrepancy can lead to differences in how request paths are interpreted by heimdall and upstream components, which may result in authorization bypass. This issue has been patched in version 0.17.14.