CVE-2024-29022Network attack vector

Session hijacking via stored request-header XSS

Published Apr 12, 2024 · Updated Aug 2, 2024

Stored XSS in Xibo CMS 1.8.0 through 3.3.9 and 4.0.0 through 4.0.8 allows remote attackers to hijack sessions via request headers. Session handling stores the User-Agent header without HTML encoding and accepts forwarding headers without IP validation, then renders the values in session and display grids. Exploitation requires a user to view an affected grid, where injected JavaScript can exfiltrate session identifiers, user agents, or display information.

CVSS severity8.8
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Xibo CMS 1.8.0 through 3.3.9 and 4.0.0 through 4.0.8 allows remote attackers to hijack sessions via request headers. Session handling stores the User-Agent header without HTML encoding and accepts forwarding headers without IP validation, then renders the values in session and display grids. Exploitation requires a user to view an affected grid, where injected JavaScript can exfiltrate session identifiers, user agents, or display information.

The record

CVE
CVE-2024-29022
Published
Apr 12, 2024
Updated
Aug 2, 2024
Vendor
Xibo Signage
Product
Xibo CMS
Classifications
CWE-79, CWE-117, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=>=1.8.0, < 3.3.10
  2. Affected versionversion=1.8.0 <3.3.10
  3. Affected versionversion=>= 4.0.0, < 4.0.9
  4. Affected versionversion=4.0.0 <4.0.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Xibo Signage · Xibo CMSversion=>=1.8.0, < 3.3.10; version=1.8.0 <3.3.10; version=>= 4.0.0, < 4.0.9; version=4.0.0 <4.0.9

Published CVSS scores

8.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-117Improper Output Neutralization for Logs
T1539Steal Web Session Cookie

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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