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TI-2026-01035 Aliases CVE-2026-1323GHSA-2pm6-9fhx-vvg3

Insecure Deserialization in extension "Mailqueue" (mailqueue)

Priority LOW 23CWE-502Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

The extension fails to properly define allowed classes used when deserializing transport failure metadata. An attacker may exploit this to execute untrusted serialized code. Note that an active exploit requires write access to the directory configured at $GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport_spool_filepath'].

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00228 13th percentileScored 2026-11-07
Fix Fixed Extension "Mailqueue" (TYPO3): 0.4.5, 0.5.2cpsit/typo3-mailqueue (Packagist): 0.4.5, 0.5.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TYPO3Extension "Mailqueue"before 0.4.5; 0.5.0 to before 0.5.20.4.5, 0.5.2Patch availableCNA
—cpsit/typo3-mailqueue (Packagist)before 0.4.50.4.5Patch availableGHSA-2pm6-9fhx-vvg3
—cpsit/typo3-mailqueue (Packagist)0.5.0 to before 0.5.20.5.2Patch availableGHSA-2pm6-9fhx-vvg3
  • Extension "Mailqueue" VendorTYPO3 Affected before 0.4.5; 0.5.0 to before 0.5.2 Fixed in 0.4.5, 0.5.2 Patch available CNA
  • cpsit/typo3-mailqueue (Packagist) Vendor— Affected before 0.4.5 Fixed in 0.4.5 Patch available GHSA-2pm6-9fhx-vvg3
  • cpsit/typo3-mailqueue (Packagist) Vendor— Affected 0.5.0 to before 0.5.2 Fixed in 0.5.2 Patch available GHSA-2pm6-9fhx-vvg3

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cps-it:mailqueue:*:*:*:*:*:typo3:*:*before 0.4.5; 0.5.0 to before 0.5.2VulnerableCps-it
  • cpe:2.3:a:cps-it:mailqueue:*:*:*:*:*:typo3:*:* Versions before 0.4.5; 0.5.0 to before 0.5.2 Vulnerable ·Cps-it

Remediation

  • Fix · CNA Extension "Mailqueue" (TYPO3) Fixed in 0.4.5, 0.5.2
  • Fix · GHSA-2pm6-9fhx-vvg3 cpsit/typo3-mailqueue (Packagist) Fixed in 0.4.5 Advisory →
  • Fix · GHSA-2pm6-9fhx-vvg3 cpsit/typo3-mailqueue (Packagist) Fixed in 0.5.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-1323
  2. 2026-10-03 Alias added: GHSA-2pm6-9fhx-vvg3

References

Advisory 2

Other 4

  • TI-2023-10314 Persisted Cross-Site Scripting in Frontend Rendering in typo3 CVSS 3.1HIGH 8.8
  • TI-2010-03538 The jumpUrl (aka access tracking) implementation in tslib/class.tslib_fe.php in TYPO3… CVSS 2.0HIGH 7.1
  • TI-2009-00775 The jumpUrl mechanism in class.tslib_fe.php in TYPO3 3.3.x through 3.8.x, 4.0 before… CVSS 2.0MEDIUM 5.0
  • TI-2025-30547 The sr_feuser_register extension through 12.4.8 for TYPO3 allows Remote Code Execution. CVSS 3.1CRITICAL 10.0
  • TI-2019-08867 The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before… CVSS 3.1CRITICAL 9.8
  • TI-2008-04019 Unspecified vulnerability in the TYPO3 Secure Directory (kw_secdir) extension before… CVSS 2.0HIGH 10.0
See all 411 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences