> CVE-2026-45133 [HIGH]

« BACK_TO_HOME
PUBLISHED
2026-07-14 19:17
MODIFIED
2026-07-14 19:17
CVSS_SCORE V3
8.2
EPSS (Prob. Exploit)
0.63%
Top 50.4%
DATA SOURCES:
NVD 🔗 2026-07-14 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-10-29 OSV 🔗 2026-07-18

> DESCRIPTION

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, when the parser is exposed to attacker-controlled input, deeply nested mappings or sequences cause both the block-level (Parser::parseBlock()) and inline (Inline::parseSequence() / Inline::parseMapping()) parsers to recurse without a depth limit. A crafted document exhausts the PHP stack and crashes the worker. This issue is fixed in versions 5.4.52, 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:N/VC:N/VI:N/VA:H/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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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
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
None (N)
Aucune interaction utilisateur nécessaire
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
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-674 CWE-776 CWE-1333

> CWE DETAILED DESCRIPTIONS

CWE-674: Uncontrolled Recursion - The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. | CWE-776: Improper Restriction of Recursive Entity References in DTDs - The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities. | CWE-1333: Inefficient Regular Expression Complexity - The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.

> GITHUB SECURITY ADVISORY

GHSA-c2p3-7m5p-cv8x LOW

Symfony hardened the parser when handling untrusted input

AFFECTED PACKAGES:
COMPOSER / symfony/yaml
>= 8.0.0, < 8.0.12
Fixed in: 8.0.12
COMPOSER / symfony/yaml
>= 7.0.0, < 7.4.12
Fixed in: 7.4.12
COMPOSER / symfony/yaml
>= 6.0.0, < 6.4.40
Fixed in: 6.4.40
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
>= 6.0.0, < 6.4.40
Fixed in: 6.4.40
COMPOSER / symfony/symfony
< 5.4.52
Fixed in: 5.4.52
COMPOSER / symfony/yaml
< 5.4.52
Fixed in: 5.4.52

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Symfony: [Yaml] Harden the parser when handling untrusted input

AFFECTED PACKAGES:
Unknown / Unknown
245 versions affected
ALIASES:
GHSA-c2p3-7m5p-cv8x

> HISTORIQUE DES MODIFICATIONS

Première apparition
14/07/2026 19:17
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-674: Uncontrolled Recursion - The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. | CWE-7...
Nouvelle valeur:
CWE-674: Uncontrolled Recursion - The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. | CWE-7...
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-674: Uncontrolled Recursion - The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. | CWE-7...
Total des modifications: 2 Dernière mise à jour: 5 days ago

> REFERENCES

https://github.com/symfony/symfony/releases/tag/v5.4.52
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-c2p3-7m5p-cv8x
« BACK_TO_HOME