> CVE-2026-45066 [LOW]

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PUBLISHED
2026-07-14 18:17
MODIFIED
2026-07-14 18:17
CVSS_SCORE V3
2.3
EPSS (Prob. Exploit)
0.34%
Top 73.9%
DATA SOURCES:
NVD đź”— 2026-07-14 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-10-25 GITHUB đź”— 2026-10-29 OSV đź”— 2026-07-20

> DESCRIPTION

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0-BETA1 until 6.4.40, 7.4.12, and 8.0.12, HtmlSanitizer URL sanitization can allow off-allowlist URLs through allowLinkHosts() or allowMediaHosts() because UrlSanitizer::parse() follows RFC 3986 while browsers follow WHATWG URL parsing, and because <area href> is checked against the media policy rather than the link policy. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
Unknown (P)
Interaction inconnue
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-184 CWE-436

> CWE DETAILED DESCRIPTIONS

CWE-184: Incomplete List of Disallowed Inputs - The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete. | CWE-436: Interpretation Conflict - Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.

> GITHUB SECURITY ADVISORY

GHSA-qc95-4862-92fh MODERATE

Symfony has an HtmlSanitizer allowLinkHosts() / allowMediaHosts() Bypass via URL-Parser Differentials and <area> Misclassification

AFFECTED PACKAGES:
COMPOSER / symfony/symfony
>= 8.0.0, < 8.0.12
Fixed in: 8.0.12
COMPOSER / symfony/symfony
>= 7.0.0, < 7.4.12
Fixed in: 7.4.12
COMPOSER / symfony/symfony
>= 6.1.0, < 6.4.40
Fixed in: 6.4.40
COMPOSER / symfony/html-sanitizer
>= 8.0.0, < 8.0.12
Fixed in: 8.0.12
COMPOSER / symfony/html-sanitizer
>= 7.0.0, < 7.4.12
Fixed in: 7.4.12
COMPOSER / symfony/html-sanitizer
>= 6.1.0, < 6.4.40
Fixed in: 6.4.40

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Symfony: HtmlSanitizer allowLinkHosts() / allowMediaHosts() Bypass via URL-Parser Differentials and <area> Misclassification

AFFECTED PACKAGES:
Unknown / Unknown
73 versions affected
ALIASES:
GHSA-qc95-4862-92fh

> HISTORIQUE DES MODIFICATIONS

Première apparition
14/07/2026 18:17
Source: NVD
đź“Š ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-184: Incomplete List of Disallowed Inputs - The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise requ...
Total des modifications: 1 Dernière mise à jour: 3 months ago

> REFERENCES

https://github.com/symfony/symfony/commit/d506b556d3d3906f3e8660ad82257ce87edbaa...
https://github.com/symfony/symfony/releases/tag/v6.4.40
https://github.com/symfony/symfony/releases/tag/v7.4.12
https://github.com/symfony/symfony/releases/tag/v8.0.12
https://github.com/symfony/symfony/security/advisories/GHSA-qc95-4862-92fh
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