CVE-2026-45755
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
Description
CVE-2026-45755: Mailtrap Mailer Webhook Parser Never Verifies the X-Mt-Signature HMAC: Unauthenticated Webhook Event Injection
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-45755
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 7.4.12+dfsg-1 |
| debian | sid | fixed | 7.4.12+dfsg-1 |
| debian | trixie | fixed | 0 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | symfony/symfony | >=7.2.0,<7.3.0|>=7.3.0,<7.4.0|>=7.4.0,<7.4.12|>=8.0.0,<8.0.12 | |
| Packagist | symfony/mailtrap-mailer | >=7.2.0,<7.3.0|>=7.3.0,<7.4.0|>=7.4.0,<7.4.12|>=8.0.0,<8.0.12 | |
References
Verify integrity in audit chain (admin only). AS-IS.