CVE-2023-38499Network attack vector

Unauthorized content disclosure via cross-site page resolution

Published Jul 25, 2023 · Updated Oct 15, 2024

Improper access control in TYPO3 CMS URL routing allows remote attackers to read out-of-scope site content via id and L parameters. SiteMatcher resolved the supplied page and language identifiers without requiring the page to belong to the site selected by the request host. Exploitation requires a multi-site deployment and a reachable public site; the demonstrated consequence is unauthorized reading of another site's rendered content.

CVSS severity3.7
Low
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in TYPO3 CMS URL routing allows remote attackers to read out-of-scope site content via id and L parameters. SiteMatcher resolved the supplied page and language identifiers without requiring the page to belong to the site selected by the request host. Exploitation requires a multi-site deployment and a reachable public site; the demonstrated consequence is unauthorized reading of another site's rendered content.

The record

CVE
CVE-2023-38499
Published
Jul 25, 2023
Updated
Oct 15, 2024
Vendor
in2code GmbH
Product
TYPO3 CMS
Classifications
CWE-200, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 10.0.0, < 10.4.39
  2. Affected versionversion=>= 11.0.0, < 11.5.30
  3. Affected versionversion=>= 12.0.0, < 12.4.4
  4. Affected versionversion=>= 9.4.0, < 9.5.42

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

in2code GmbH · TYPO3 CMSversion=>= 10.0.0, < 10.4.39; version=>= 11.0.0, < 11.5.30; version=>= 12.0.0, < 12.4.4; version=>= 9.4.0, < 9.5.42

Published CVSS scores

3.7GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.5TYPO3 Security TeamCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1190Exploit Public-Facing Application

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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