CVE-2025-36227Network attack vector

Session hijacking via unvalidated Host header

Published Mar 10, 2026 · Updated Mar 10, 2026

HTTP header injection in IBM Aspera Faspex 5 5.0.0 through 5.0.14.3 allows remote authenticated users to hijack sessions. The web application accepts an untrusted Host header without proper validation, allowing attacker-controlled header content to influence generated responses. Exploitation requires low-privileged authentication and victim interaction; consequences are bounded to cross-site scripting, cache poisoning, or session hijacking.

CVSS severity5.4
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTTP header injection in IBM Aspera Faspex 5 5.0.0 through 5.0.14.3 allows remote authenticated users to hijack sessions. The web application accepts an untrusted Host header without proper validation, allowing attacker-controlled header content to influence generated responses. Exploitation requires low-privileged authentication and victim interaction; consequences are bounded to cross-site scripting, cache poisoning, or session hijacking.

The record

CVE
CVE-2025-36227
Published
Mar 10, 2026
Updated
Mar 10, 2026
Vendor
IBM
Product
IBM Aspera Faspex
Classifications
CWE-644, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 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.

  1. Affected versionversion=5.0.0 <=5.0.14.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Aspera Faspexversion=5.0.0 <=5.0.14.3

Published CVSS scores

5.4IBMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-644Improper Neutralization of HTTP Headers for Scripting Syntax
T1190Exploit Public-Facing Application

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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