Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-45754

27
FAUCET Score

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 6.4.40, 7.4.12, and 8.0.12, the Mailjet mailer bridge and LOX24 notifier bridge webhook parsers received configured webhook secrets but did not verify them, allowing unauthenticated POST requests to inject forged Mailjet and LOX24 event payloads. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.

First published: Jul 14, 2026Last modified: Jul 14, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.4.0, < 6.4.40CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.4.12CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 8.0.0, < 8.0.12CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.9MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
LOW
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 16th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

composerpatch availablevia ghsa
Product: symfony/mailjet-mailerFixed in: 8.0.12
composerpatch availablevia ghsa
Product: symfony/lox24-notifierFixed in: 7.4.12
composerpatch availablevia ghsa
Product: symfony/lox24-notifierFixed in: 8.0.12
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 6.4.40
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 7.4.12
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 8.0.12
composerpatch availablevia ghsa
Product: symfony/mailjet-mailerFixed in: 6.4.40
composerpatch availablevia ghsa
Product: symfony/mailjet-mailerFixed in: 7.4.12
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-64hg-93w9-fc35medium

Symfony's Mailjet Mailer Webhook Parser Never Verifies the Configured Secret — Unauthenticated Webhook Event Injection

May 28, 2026

References

github.com / symfony/symfony/commit/3e52bf5ab733ee32e35eeeeb2631d859c941838e
Patch
github.com / symfony/symfony/commit/4aaa45dd054f73445f1ab254968b7e60b546cc77
Patch
github.com / symfony/symfony/releases/tag/v6.4.40
Release Notes
github.com / symfony/symfony/releases/tag/v7.4.12
Release Notes
github.com / symfony/symfony/releases/tag/v8.0.12
Release Notes
github.com / symfony/symfony/security/advisories/GHSA-64hg-93w9-fc35
PatchVendor Advisory