CVE-2025-48053

Discourse is an open-source discussion platform. Prior to version 3.4.4 of the `stable` branch, version 3.5.0.beta5 of the `beta` branch, and version 3.5.0.beta6-dev of the `tests-passed` branch, sending a malicious URL in a PM to a bot user can cause a reduced the availability of a Discourse instance. This issue is patched in version 3.4.4 of the `stable` branch, version 3.5.0.beta5 of the `beta` branch, and version 3.5.0.beta6-dev of the `tests-passed` branch. No known workarounds are available.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/discourse/discourse/security/advisories/GHSA-3q5q-qmrm-rvwx	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:discourse:discourse:::::stable:::*
	cpe:2.3:a:discourse:discourse:::::beta:::*
	cpe:2.3:a:discourse:discourse:3.5.0:beta1:::beta:::*
	cpe:2.3:a:discourse:discourse:3.5.0:beta2:::beta:::*
	cpe:2.3:a:discourse:discourse:3.5.0:beta3:::beta:::*
	cpe:2.3:a:discourse:discourse:3.5.0:beta4:::beta:::*

History

No history.

Information

Published : 2025-06-09 13:15

Updated : 2025-09-25 20:27

NVD link : CVE-2025-48053

Mitre link : CVE-2025-48053

CVE.ORG link : CVE-2025-48053

JSON object : View

Products Affected

discourse

discourse

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling

{"id": "CVE-2025-48053", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "[email protected]", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "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: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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "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": "2025-06-09T13:15:23.163", "references": [{"url": "https://github.com/discourse/discourse/security/advisories/GHSA-3q5q-qmrm-rvwx", "tags": ["Vendor Advisory"], "source": "[email protected]"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "Discourse is an open-source discussion platform. Prior to version 3.4.4 of the `stable` branch, version 3.5.0.beta5 of the `beta` branch, and version 3.5.0.beta6-dev of the `tests-passed` branch, sending a malicious URL in a PM to a bot user can cause a reduced the availability of a Discourse instance. This issue is patched in version 3.4.4 of the `stable` branch, version 3.5.0.beta5 of the `beta` branch, and version 3.5.0.beta6-dev of the `tests-passed` branch. No known workarounds are available."}, {"lang": "es", "value": "Discourse es una plataforma de discusi\u00f3n de c\u00f3digo abierto. En versiones anteriores a la 3.4.4 de la rama \"stable\", la 3.5.0.beta5 de la rama \"beta\" y la 3.5.0.beta6-dev de la rama \"tests-passed\", enviar una URL maliciosa en un mensaje privado a un usuario bot pod\u00eda reducir la disponibilidad de una instancia de Discourse. Este problema se ha corregido en las versiones 3.4.4 de la rama \"stable\", la 3.5.0.beta5 de la rama \"beta\" y la 3.5.0.beta6-dev de la rama \"tests-passed\". No se conocen soluciones alternativas."}], "lastModified": "2025-09-25T20:27:48.183", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*", "vulnerable": true, "matchCriteriaId": "4B5F12D3-D031-4EF6-B122-2F062FEF67B8", "versionEndExcluding": "3.4.4"}, {"criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*", "vulnerable": true, "matchCriteriaId": "A0A6583A-A8AE-4C05-8947-79A0E4A73E1D", "versionEndExcluding": "3.5.0"}, {"criteria": "cpe:2.3:a:discourse:discourse:3.5.0:beta1:*:*:beta:*:*:*", "vulnerable": true, "matchCriteriaId": "66931995-F794-48F0-9DBB-9048B6C9D8DD"}, {"criteria": "cpe:2.3:a:discourse:discourse:3.5.0:beta2:*:*:beta:*:*:*", "vulnerable": true, "matchCriteriaId": "B0461B93-273C-4305-80F9-C70A100B4DFE"}, {"criteria": "cpe:2.3:a:discourse:discourse:3.5.0:beta3:*:*:beta:*:*:*", "vulnerable": true, "matchCriteriaId": "F1596D4E-FD8B-4443-AAAE-1D4AC6B1CE6D"}, {"criteria": "cpe:2.3:a:discourse:discourse:3.5.0:beta4:*:*:beta:*:*:*", "vulnerable": true, "matchCriteriaId": "997761D0-A8A1-438F-83DE-5E9E4890CEED"}], "operator": "OR"}]}], "sourceIdentifier": "[email protected]"}