CVE-2026-120327: Open Redirection in extension "Mail" (mail)
Vulnerability summary
CVE-2026-120327 is a medium (CVSS 5.3) URL Redirection to Untrusted Site vulnerability in typo3 extension "mail". EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 38.3% of scored vulnerabilities.
Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Timeline
- 03-11-2026PublishedVulnerability first disclosed.
- 03-11-2026Last modifiedVulnerability information updated.
Description
The click tracking middleware accepts an arbitrary target URL and redirects to it. Attackers can misuse links to the website to redirect users to external sites.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST5.3MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/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
EPSS trend
Probability
0.44%
Chance of exploitation in the next 30 days
Percentile
38%
Versus all other CVEs
30-day change
Change unavailable
Change unavailable
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Typo31 product
- extension "mail"≥ 4.0.0, < 4.2.0 | < 3.12.5
1 vendor · 1 product
References
1 links- typo3.org/security/advisory/typo3-ext-sa-2026-037Vendor Advisory