CVE-2026-7845

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The project was informed of the problem early through an issue report but has not responded yet."}, {"lang": "es", "value": "Se ha encontrado un fallo en chatchat-space Langchain-Chatchat hasta la versi\u00f3n 0.3.1.3. Este problema afecta a la funci\u00f3n PIL.Image.tobytes del archivo libs/chatchat-server/chatchat/webui_pages/dialogue/dialogue.py del componente Vision Chat Paste Image Gestor. Esta manipulaci\u00f3n del argumento paste_image.image_data causa el uso de un hash d\u00e9bil. El atacante necesita estar presente en la red local. El ataque se considera de alta complejidad. La explotabilidad se eval\u00faa como dif\u00edcil. El exploit ha sido publicado y puede ser utilizado. El proyecto fue informado del problema tempranamente a trav\u00e9s de un informe de problema pero a\u00fan no ha respondido."}], "id": "CVE-2026-7845", "lastModified": "2026-07-24T08:10:00.150", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "HIGH", "accessVector": "ADJACENT_NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 1.4, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:A/AC:H/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 2.5, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 2.6, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 1.2, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-7845", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-05T17:48:07.236978Z", "version": "2.0.3"}}]}, "published": "2026-05-05T16:16:19.383", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-1-tobytes-Hash-Collision.md"}, {"source": "cna@vuldb.com", "url": "https://github.com/chatchat-space/Langchain-Chatchat/"}, {"source": "cna@vuldb.com", "url": "https://github.com/chatchat-space/Langchain-Chatchat/issues/5462"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/807794"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/361124"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/361124/cti"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/chatchat-space/Langchain-Chatchat/issues/5462"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-327"}, {"lang": "en", "value": "CWE-328"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.3.1.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.3.1.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.3.1.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.3.1.3"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Langchain-Chatchat", "source": "cna", "vendor": "chatchat-space"}, "product": "langchain-chatchat", "vendor": "chatchat-space"}], "created": "2026-05-05T17:45:06.154397+00:00", "updated": "2026-05-05T18:00:12.691739+00:00", "vendors": ["chatchat-space", "chatchat-space$PRODUCT$langchain-chatchat"]}