Saving the configuration of the mail backend module writes submitted settings to the page TSconfig without restricting
Source GCVE Database
Not known to be exploited · CVSS 5.3 Medium : upgrade to 4.2.0 or 3.12.5 when convenient.
Data as of 3 Nov 2026, 13:30 UTC
Thin evidence
One scorer or none| CNA (TYPO3) | CVSS 4.0 | 5.3 |
|---|
- Patch
- Available – fixed in 4.2.0, 3.12.5
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
Upgrade Extension "Mail" and mediaessenz/mail to 4.2.0 or 3.12.5.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Extension "Mail"mediaessenz/mail | Affected
| Fixed in
|
| Extension "Mail"mediaessenz/mail | Affected
| Fixed in
|
Packagistmediaessenz/mailpkg:composer/mediaessenz/mailOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, restrict backend user access to the mail module to trusted administrators only to minimize risk.
Description
A vulnerability exists in the mail backend module configuration saving process where submitted settings are written to the page TSconfig without proper restriction. This allows backend users with access to the mail module to write arbitrary page TSconfig entries, potentially leading to unauthorized configuration changes. The issue has a medium severity with a CVSS score of 5.3.