CVE-2026-45063
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
Description
Symfony Vulnerable to Identity Spoofing via Unanchored DN Regex in X509Authenticator
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-45063
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | fixed | 7.4.12+dfsg-1 |
| debian | sid | fixed | 7.4.12+dfsg-1 |
| debian | trixie | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | symfony/symfony | >=2.0.0,<3.0.0|>=3.0.0,<4.0.0|>=4.0.0,<5.0.0|>=5.0.0,<5.1.0|>=5.1.0,<5.2.0|>=5.2.0,<5.3.0|>=5.3.0,<5.4.0|>=5.4.0,<5.4.52|>=6.0.0,<6.1.0|>=6.1.0,<6.2.0|>=6.2.0,<6.3.0|>=6.3.0,<6.4.0|>=6.4.0,<6.4.40|>=7.0.0,<7.1.0|>=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 | >=2.0.0,<3.0.0|>=3.0.0,<4.0.0|>=4.0.0,<5.0.0|>=5.0.0,<5.1.0|>=5.1.0,<5.2.0|>=5.2.0,<5.3.0|>=5.3.0,<5.4.0|>=5.4.0,<5.4.52|>=6.0.0,<6.1.0|>=6.1.0,<6.2.0|>=6.2.0,<6.3.0|>=6.3.0,<6.4.0|>=6.4.0,<6.4.40|>=7.0.0,<7.1.0|>=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 | <5.4.52 | 5.4.52 |
| Packagist | symfony/security-http | >=6.0.0-BETA1,<6.4.40 | 6.4.40 |
| Packagist | symfony/security-http | >=7.0.0-BETA1,<7.4.12 | 7.4.12 |
| Packagist | symfony/security-http | >=8.0.0-BETA1,<8.0.12 | 8.0.12 |
| Packagist | symfony/symfony | <5.4.52 | 5.4.52 |
| Packagist | symfony/symfony | >=6.0.0-BETA1,<6.4.40 | 6.4.40 |
| Packagist | symfony/symfony | >=7.0.0-BETA1,<7.4.12 | 7.4.12 |
| Packagist | symfony/symfony | >=8.0.0-BETA1,<8.0.12 | 8.0.12 |
| COMPOSER | symfony/symfony | >= 8.0.0-BETA1, < 8.0.12 | 8.0.12 |
| COMPOSER | symfony/symfony | >= 7.0.0-BETA1, < 7.4.12 | 7.4.12 |
| COMPOSER | symfony/symfony | >= 6.0.0-BETA1, < 6.4.40 | 6.4.40 |
| COMPOSER | symfony/symfony | < 5.4.52 | 5.4.52 |
| COMPOSER | symfony/security-http | >= 8.0.0-BETA1, < 8.0.12 | 8.0.12 |
| COMPOSER | symfony/security-http | >= 7.0.0-BETA1, < 7.4.12 | 7.4.12 |
| COMPOSER | symfony/security-http | >= 6.0.0-BETA1, < 6.4.40 | 6.4.40 |
| COMPOSER | symfony/security-http | < 5.4.52 | 5.4.52 |
References
- https://symfony.com/cve-2026-45063
- https://github.com/symfony/symfony/security/advisories/GHSA-ph86-p8f6-f9r2
- https://github.com/symfony/symfony/commit/ccb3f724c7ff55670a6fe3521c7bf1514cceb478
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2026-45063.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45063.yaml
- https://github.com/symfony/symfony
- https://security-tracker.debian.org/tracker/CVE-2026-45063
- https://github.com/advisories/GHSA-ph86-p8f6-f9r2
Verify integrity in audit chain (admin only). AS-IS.