2 lines
4.3 KiB
JSON
2 lines
4.3 KiB
JSON
{"affected":[{"affectedData":[{"collectionURL":"https://github.com/cloudflare","defaultStatus":"unaffected","packageName":"agents","repo":"https://github.com/cloudflare/agents","versions":[{"lessThan":"0.3.10","status":"affected","version":"0","versionType":"git"}]}],"source":"cna@cloudflare.com"}],"cveTags":[],"descriptions":[{"lang":"en","value":"Summary\n\nA Reflected Cross-Site Scripting (XSS) vulnerability was discovered in the AI Playground's OAuth callback handler. The `error_description` query parameter was directly interpolated into an HTML script tag without proper escaping, allowing attackers to execute arbitrary JavaScript in the context of the victim's session.\n\n\n\n\nRoot cause\n\nThe OAuth callback handler in `site/ai-playground/src/server.ts` directly interpolated the `authError` value, sourced from the `error_description` query parameter, into an inline `<script>` tag.\n\n\nImpact\n\nAn attacker could craft a malicious link that, when clicked by a victim, would:\n\n * Steal user chat message history - Access all LLM interactions stored in the user's session.\n\n\n * Access connected MCP Servers - Interact with any MCP servers connected to the victim's session (public or authenticated/private), potentially allowing the attacker to perform actions on the victim's behalf\n\n\n\n\n\nMitigation:\n\n * PR: https://github.com/cloudflare/agents/pull/841 https://github.com/cloudflare/agents/pull/841 \n\n\n\n\n * Agents-sdk users should upgrade to agents@0.3.10\n\n\n\n\n * Developers using configureOAuthCallback with custom error handling in their own applications should ensure all user-controlled input is escaped before interpolation."},{"lang":"es","value":"Resumen\n\nUna vulnerabilidad de Cross-Site Scripting Reflejado (XSS) fue descubierta en el manejador de callback de OAuth del AI Playground. El parámetro de consulta `error_description` fue directamente interpolado en una etiqueta de script HTML sin el escape adecuado, permitiendo a los atacantes ejecutar JavaScript arbitrario en el contexto de la sesión de la víctima.\n\nCausa raíz\n\nEl manejador de callback de OAuth en `site/ai-playground/src/server.ts` interpoló directamente el valor `authError`, obtenido del parámetro de consulta `error_description`, en una etiqueta `"}],"id":"CVE-2026-1721","lastModified":"2026-06-17T10:16:23.767","metrics":{"cvssMetricV40":[{"cvssData":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","availabilityRequirement":"NOT_DEFINED","baseScore":6.2,"baseSeverity":"MEDIUM","confidentialityRequirement":"NOT_DEFINED","exploitMaturity":"NOT_DEFINED","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":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"LOW","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:L/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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"source":"cna@cloudflare.com","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-1721","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-02-13T13:10:24.218273Z","version":"2.0.3"}}]},"published":"2026-02-13T03:15:52.467","references":[{"source":"cna@cloudflare.com","url":"https://github.com/cloudflare/agents/pull/841"}],"sourceIdentifier":"cna@cloudflare.com","vulnStatus":"Deferred","weaknesses":[{"description":[{"lang":"en","value":"CWE-79"}],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary"}]}
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