CVE-2025-32431

Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. In versions prior to 2.11.24, 3.3.6, and 3.4.0-rc2. There is a potential vulnerability in Traefik managing the requests using a PathPrefix, Path or PathRegex matcher. When Traefik is configured to route the requests to a backend using a matcher based on the path, if the URL contains a /../ in its path, it’s possible to target a backend, exposed using another router, by-passing the middlewares chain. This issue has been patched in versions 2.11.24, 3.3.6, and 3.4.0-rc2. A workaround involves adding a `PathRegexp` rule to the matcher to prevent matching a route with a `/../` in the path.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/traefik/traefik/pull/11684	Patch
https://github.com/traefik/traefik/releases/tag/v2.11.24	Release Notes
https://github.com/traefik/traefik/releases/tag/v3.3.6	Release Notes
https://github.com/traefik/traefik/releases/tag/v3.4.0-rc2	Release Notes
https://github.com/traefik/traefik/security/advisories/GHSA-6p68-w45g-48j7	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:traefik:traefik::::::::
	cpe:2.3:a:traefik:traefik::::::::
	cpe:2.3:a:traefik:traefik:3.4.0:-::::::
	cpe:2.3:a:traefik:traefik:3.4.0:rc1::::::

History

No history.

Information

Published : 2025-04-21 16:15

Updated : 2025-11-25 15:13

NVD link : CVE-2025-32431

Mitre link : CVE-2025-32431

CVE.ORG link : CVE-2025-32431

JSON object : View

Products Affected

traefik

traefik

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

{"id": "CVE-2025-32431", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.8, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/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", "exploitMaturity": "PROOF_OF_CONCEPT", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2025-04-21T16:15:54.610", "references": [{"url": "https://github.com/traefik/traefik/pull/11684", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/traefik/traefik/releases/tag/v2.11.24", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/traefik/traefik/releases/tag/v3.3.6", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/traefik/traefik/releases/tag/v3.4.0-rc2", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/traefik/traefik/security/advisories/GHSA-6p68-w45g-48j7", "tags": ["Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. In versions prior to 2.11.24, 3.3.6, and 3.4.0-rc2. There is a potential vulnerability in Traefik managing the requests using a PathPrefix, Path or PathRegex matcher. When Traefik is configured to route the requests to a backend using a matcher based on the path, if the URL contains a /../ in its path, it\u2019s possible to target a backend, exposed using another router, by-passing the middlewares chain. This issue has been patched in versions 2.11.24, 3.3.6, and 3.4.0-rc2. A workaround involves adding a `PathRegexp` rule to the matcher to prevent matching a route with a `/../` in the path."}, {"lang": "es", "value": "Traefik (pronunciado \"traffic\") es un proxy inverso HTTP y balanceador de carga. En versiones anteriores a 2.11.24, 3.3.6 y 3.4.0-rc2, existe una vulnerabilidad potencial en Traefik al gestionar las solicitudes mediante un comparador PathPrefix, Path o PathRegex. Cuando Traefik se configura para enrutar las solicitudes a un backend mediante un comparador basado en la ruta, si la URL contiene un /../ en su ruta, es posible dirigirse a un backend expuesto mediante otro enrutador, omitiendo la cadena de middleware. Este problema se ha corregido en las versiones 2.11.24, 3.3.6 y 3.4.0-rc2. Un workaround consiste en a\u00f1adir una regla `PathRegexp` al comparador para evitar que coincida con una ruta que contenga un `/../` en la ruta."}], "lastModified": "2025-11-25T15:13:09.177", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "04105DE7-39D3-4C4D-9B00-BEA0E4CC3718", "versionEndExcluding": "2.11.24"}, {"criteria": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D4277B88-BBAE-400D-9662-FB38E74E2D29", "versionEndExcluding": "3.3.6", "versionStartIncluding": "3.0.0"}, {"criteria": "cpe:2.3:a:traefik:traefik:3.4.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2B02822F-A7A0-4456-B2A7-C7298F44360D"}, {"criteria": "cpe:2.3:a:traefik:traefik:3.4.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BC1B577C-D38A-440F-8B6F-8B0CCC36C32E"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}