CVE-2024-40686Network attack vector

Session hijacking via improper Host header validation

Published Jul 23, 2025 · Updated Aug 18, 2025

HTTP header injection in IBM Operations Analytics - Log Analysis allows remote attackers to hijack sessions through crafted Host headers. IBM attributes the flaw to inadequate validation of Host request-header input but does not disclose the affected handler or the operation that incorporates the value. IBM's assessment requires low privileges; reported consequences include XSS, cache poisoning, and session hijacking, without service interruption.

CVSS severity5.4
Medium
EPSS probability0.18%
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 Operations Analytics - Log Analysis allows remote attackers to hijack sessions through crafted Host headers. IBM attributes the flaw to inadequate validation of Host request-header input but does not disclose the affected handler or the operation that incorporates the value. IBM's assessment requires low privileges; reported consequences include XSS, cache poisoning, and session hijacking, without service interruption.

The record

CVE
CVE-2024-40686
Published
Jul 23, 2025
Updated
Aug 18, 2025
Vendor
IBM
Product
IBM Operations Analytics - Log Analysis
Classifications
CWE-644
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 2025Record 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=1.3.7.0, 1.3.7.1, 1.3.7.2, 1.3.8.0, 1.3.8.1, 1.3.8.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Operations Analytics - Log Analysisversion=1.3.7.0, 1.3.7.1, 1.3.7.2, 1.3.8.0, 1.3.8.1, 1.3.8.2

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.4IBM X-ForceCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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