CVE-2026-0895 json
Insecure Deserialization in extension "Mailqueue" (mailqueue)
published 9mo ago modified 4mo ago also GHSA-ggff-9mj3-7246 , EUVD-2026-3591
- cvss
- 5.2
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 4%
- public exploits
- 0
- none known
Summary
The extension extends TYPO3’ FileSpool component, which was vulnerable to Insecure Deserialization prior to TYPO3-CORE-SA-2026-004 https://typo3.org/security/advisory/typo3-core-sa-2026-004 . Since the related fix is overwritten by the extension, using the extension with a patched TYPO3 core version still allows for Insecure Deserialization, because the affected vulnerable code was extracted from TYPO3 core to the extension. More information about this vulnerability can be found in the related TYPO3 Core Security Advisory TYPO3-CORE-SA-2026-004 https://typo3.org/security/advisory/typo3-core-sa-2026-004 .
Patch / fix
- packagist cpsit/typo3-mailqueue 0.4.3, 0.5.1
- TYPO3 Extension "Mailqueue" 0.4.3, 0.5.1
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 9mo ago
Exploit prediction
0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.2 | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H |
| CNA | 4.0 | 5.2 | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | cpsit/typo3-mailqueue | <0.4.3 >=0.5.0, <0.5.1 |
0.4.3 0.5.1 |
Affected products
- TYPO3 Extension "Mailqueue"
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
github.com
/CPS-IT/mailqueue/commit/fd09aa4e1a751551bae4b228bee814e22f2048db
patch, web
-
github.com
/CPS-IT/mailqueue/commit/12a0a35027bb5609917790a94e43bbf117abf733
patch, web
-
typo3.org
/security/advisory/typo3-ext-sa-2026-001
vendor-advisory, web
-
github.com
/CPS-IT/mailqueue/security/advisories/GHSA-ggff-9mj3-7246
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-0895
advisory
-
github.com
/CPS-IT/mailqueue
package
Sources
- CVE List CVE-2026-0895
- GitHub Advisory GHSA-ggff-9mj3-7246
- NVD CVE-2026-0895
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