UBUNTU-CVE-2026-45754
Symfony PHP framework versions prior to 6.4.40, 7.4.12, and 8.0.12 contain a vulnerability in the Mailjet mailer bridge and LOX24 notifier bridge webhook parsers. These components received configured webhook secrets but did not verify them, allowing unauthenticated POST requests to inject forged event payloads. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.
AI Analysis
Technical Summary
The vulnerability in Symfony affects the Mailjet mailer bridge and LOX24 notifier bridge webhook parsers, which accepted webhook secrets but failed to verify them. This flaw allowed attackers to send unauthenticated POST requests with forged Mailjet and LOX24 event payloads. The issue is resolved in Symfony versions 6.4.40, 7.4.12, and 8.0.12. Multiple Ubuntu package versions of Symfony are affected as listed, corresponding to various Ubuntu LTS and Pro releases. No known exploits in the wild have been reported.
Potential Impact
An attacker can send unauthenticated POST requests to inject forged event payloads into the Mailjet and LOX24 webhook parsers. This could lead to processing of malicious or spoofed event data by applications relying on these components. No direct privilege escalation or code execution is described.
Mitigation Recommendations
A fix is available in Symfony versions 6.4.40, 7.4.12, and 8.0.12. Users should upgrade to these or later versions to address the vulnerability. The affected Ubuntu package versions should be updated accordingly. No vendor advisory indicating no action or alternative mitigations was provided.
UBUNTU-CVE-2026-45754
Description
Symfony PHP framework versions prior to 6.4.40, 7.4.12, and 8.0.12 contain a vulnerability in the Mailjet mailer bridge and LOX24 notifier bridge webhook parsers. These components received configured webhook secrets but did not verify them, allowing unauthenticated POST requests to inject forged event payloads. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.
CVSS v4.0
Affected software
pkg:deb/ubuntu/[email protected]?arch=source&distro=xenialpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu0.1+esm2?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu1+esm2?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu8+esm1?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/[email protected]+dfsg-3ubuntu3+esm1?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/[email protected]+dfsg-1?arch=source&distro=questingpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu1?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Symfony affects the Mailjet mailer bridge and LOX24 notifier bridge webhook parsers, which accepted webhook secrets but failed to verify them. This flaw allowed attackers to send unauthenticated POST requests with forged Mailjet and LOX24 event payloads. The issue is resolved in Symfony versions 6.4.40, 7.4.12, and 8.0.12. Multiple Ubuntu package versions of Symfony are affected as listed, corresponding to various Ubuntu LTS and Pro releases. No known exploits in the wild have been reported.
Potential Impact
An attacker can send unauthenticated POST requests to inject forged event payloads into the Mailjet and LOX24 webhook parsers. This could lead to processing of malicious or spoofed event data by applications relying on these components. No direct privilege escalation or code execution is described.
Mitigation Recommendations
A fix is available in Symfony versions 6.4.40, 7.4.12, and 8.0.12. Users should upgrade to these or later versions to address the vulnerability. The affected Ubuntu package versions should be updated accordingly. No vendor advisory indicating no action or alternative mitigations was provided.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-45754
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- 4.0
Threat ID: 6a58b4aa68715ace43da9274
Added to database: 07/16/2026, 10:38:34 UTC
Last enriched: 07/16/2026, 12:45:01 UTC
Last updated: 07/16/2026, 12:45:01 UTC
Views: 2
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