CVE-2026-84857

A flaw has been found in sigoden aichat up to 0.30.4. This affects an unknown function of the file src/serve.rs of the component API Endpoint. This manipulation causes uncontrolled memory allocation. The attack can be initiated remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/outlookgp/CVE/tree/main/AIChat_Serve_Request_Body_DoS_Report
https://vuldb.com/cve/CVE-2026-84857
https://vuldb.com/submit/886265
https://vuldb.com/vuln/398132
https://vuldb.com/vuln/398132/cti

Configurations

No configuration.

History

28 Sep 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Se ha encontrado una vulnerabilidad en sigoden aichat hasta la versión 0.30.4. Esto afecta a una función desconocida del archivo src/serve.rs del componente API Endpoint. Esta manipulación provoca una asignación de memoria incontrolada. El ataque puede iniciarse de forma remota. El exploit ha sido publicado y puede ser utilizado. Se contactó al proveedor con antelación sobre esta divulgación, pero no respondió de ninguna manera.

Information

Published : 2026-09-02 20:17

Updated : 2026-09-28 23:10

NVD link : CVE-2026-84857

Mitre link : CVE-2026-84857

CVE.ORG link : CVE-2026-84857

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-789

Memory Allocation with Excessive Size Value

{"id": "CVE-2026-84857", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-84857", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-03T15:36:11.774377Z"}}], "cvssMetricV2": [{"type": "Secondary", "source": "cna@vuldb.com", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Secondary", "source": "cna@vuldb.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "cna@vuldb.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.5, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "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"}}]}, "affected": [{"source": "cna@vuldb.com", "affectedData": [{"cpes": ["cpe:2.3:a:sigoden:aichat:*:*:*:*:*:*:*:*"], "vendor": "sigoden", "modules": ["API Endpoint"], "product": "aichat", "versions": [{"status": "affected", "version": "0.30.0"}, {"status": "affected", "version": "0.30.1"}, {"status": "affected", "version": "0.30.2"}, {"status": "affected", "version": "0.30.3"}, {"status": "affected", "version": "0.30.4"}]}]}], "published": "2026-09-02T20:17:42.753", "references": [{"url": "https://github.com/outlookgp/CVE/tree/main/AIChat_Serve_Request_Body_DoS_Report", "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/cve/CVE-2026-84857", "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/submit/886265", "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/vuln/398132", "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/vuln/398132/cti", "source": "cna@vuldb.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "cna@vuldb.com", "description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-789"}]}], "descriptions": [{"lang": "en", "value": "A flaw has been found in sigoden aichat up to 0.30.4. This affects an unknown function of the file src/serve.rs of the component API Endpoint. This manipulation causes uncontrolled memory allocation. The attack can be initiated remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way."}, {"lang": "es", "value": "Se ha encontrado una vulnerabilidad en sigoden aichat hasta la versi\u00f3n 0.30.4. Esto afecta a una funci\u00f3n desconocida del archivo src/serve.rs del componente API Endpoint. Esta manipulaci\u00f3n provoca una asignaci\u00f3n de memoria incontrolada. El ataque puede iniciarse de forma remota. El exploit ha sido publicado y puede ser utilizado. Se contact\u00f3 al proveedor con antelaci\u00f3n sobre esta divulgaci\u00f3n, pero no respondi\u00f3 de ninguna manera."}], "lastModified": "2026-09-28T23:10:00.143", "sourceIdentifier": "cna@vuldb.com"}