CVE-2026-45074
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
Symfony's Cas2Handler Derives CAS service URL from Client Host Header → Cross-Service Ticket Replay
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-45074
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 | >=7.1.0,<7.2.0|>=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/security-http | >=7.1.0,<7.2.0|>=7.2.0,<7.3.0|>=7.3.0,<7.4.0|>=7.4.0,<7.4.12|>=8.0.0,<8.0.12 | |
| COMPOSER | symfony/symfony | >= 8.0.0, < 8.0.12 | 8.0.12 |
| COMPOSER | symfony/symfony | >= 7.1.0, < 7.4.12 | 7.4.12 |
| COMPOSER | symfony/security-http | >= 8.0.0, < 8.0.12 | 8.0.12 |
| COMPOSER | symfony/security-http | >= 7.1.0, < 7.4.12 | 7.4.12 |
| Packagist | symfony/security-http | >=7.1.0,<7.4.12 | 7.4.12 |
| Packagist | symfony/security-http | >=8.0.0,<8.0.12 | 8.0.12 |
| Packagist | symfony/symfony | >=7.1.0,<7.4.12 | 7.4.12 |
| Packagist | symfony/symfony | >=8.0.0,<8.0.12 | 8.0.12 |
References
- https://symfony.com/cve-2026-45074
- https://security-tracker.debian.org/tracker/CVE-2026-45074
- https://github.com/symfony/symfony/security/advisories/GHSA-j8gj-9rm5-4xhx
- https://github.com/symfony/symfony/commit/5ba145dba702404801bdf9e7e8d6df170060d541
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2026-45074.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45074.yaml
- https://github.com/advisories/GHSA-j8gj-9rm5-4xhx
- https://github.com/symfony/symfony
Verify integrity in audit chain (admin only). AS-IS.