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Review reviewHigh

CVE-2026-6321

fast-uri fast-uri, HawtIO HawtIO 4.4.0, Red Hat Ansible Automation Platform 2.5 for RHEL 8

fast-uri decoded percent-encoded path separators and dot segments before applying dot-segment removal in its normalize() and equal() functions. Encoded path data was treated like real slashes and parent-directory references, so distinct URIs could collapse onto the same normalized path. Applications that normalize or compare attacker-controlled URLs to enforce path-based policy can be bypassed, with a path that appears confined under an allowed prefix normalizing to a different location. Versions <= 3.1.0 are affected. Update to 3.1.1 or later.

CVSS
7.5
EPSS
0.52%
40.7% percentile
CISA KEV
Not listed
Published
2026.05.05
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.52%
Technical severityCVSS 7.5

Vulnerability overview

fast-uri decoded percent-encoded path separators and dot segments before applying dot-segment removal in its normalize() and equal() functions. Encoded path data was treated like real slashes and parent-directory references, so distinct URIs could collapse onto the same normalized path. Applications that normalize or compare attacker-controlled URLs to enforce path-based policy can be bypassed, with a path that appears confined under an allowed prefix normalizing to a different location. Versions <= 3.1.0 are affected. Update to 3.1.1 or later.

Affected product and versions

Product
fast-uri fast-uri, HawtIO HawtIO 4.4.0, Red Hat Ansible Automation Platform 2.5 for RHEL 8
Affected versions
< 3.1.1
Fixed versions
3.1.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that fast-uri fast-uri, HawtIO HawtIO 4.4.0, Red Hat Ansible Automation Platform 2.5 for RHEL 8 and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
CWE-22