{"id":125,"date":"2026-10-29T07:04:45","date_gmt":"2026-10-29T07:04:45","guid":{"rendered":"https:\/\/bugskan.com\/?p=125"},"modified":"2026-10-29T07:04:45","modified_gmt":"2026-10-29T07:04:45","slug":"claude-interpreter-research-used-an-allowed-api-destination-as-an-exfiltration-channel","status":"publish","type":"post","link":"https:\/\/bugskan.com\/index.php\/2026\/10\/29\/claude-interpreter-research-used-an-allowed-api-destination-as-an-exfiltration-channel\/","title":{"rendered":"Claude interpreter research used an allowed API destination as an exfiltration channel"},"content":{"rendered":"<p>CSO reported in October 2025 on Johann Rehberger\u2019s Claude code-interpreter research. The demonstrated chain used indirect prompt injection to place sensitive information in a file, then attempted to upload it through an allowed Anthropic API endpoint to an attacker-controlled account.<\/p>\n<p>The research illustrates a limitation of destination-based filtering: a permitted service can still receive data under someone else\u2019s credentials. It was a controlled demonstration, not evidence of a general breach of Anthropic\u2019s infrastructure.<\/p>\n<p>Review interpreter network settings, connector access and restrictions on outbound uploads. The source reviewed here does not establish current exploitability or a fixed product version, so those details should be confirmed with current vendor guidance.<\/p>\n<p><a href=\"https:\/\/csoonline.com\/article\/4082514\/claude-ai-vulnerability-exposes-enterprise-data-through-code-interpreter-exploit.html\">Read the original source<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Johann Rehberger\u2019s demonstration questioned whether a domain allowlist alone can prevent data leaving a code sandbox.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"bugskan_incident_id":"inc_747ffc0321a677","bugskan_event_type":"research","bugskan_response":"unknown","bugskan_technical_severity":"","bugskan_technical_severity_source":"","bugskan_evidence_quality":"medium","bugskan_affected_scope":"The code-interpreter research scenario reported in October 2025.","bugskan_recommended_next_step":"Review outbound upload permissions, not only the list of permitted domains.","bugskan_who_should_check":"","bugskan_material_updated_at":"2025-10-31T00:00:00Z","bugskan_reviewer_name":"","bugskan_reviewed_at":"","bugskan_legacy_state":"mapped","bugskan_featured":false,"bugskan_sample":false,"footnotes":""},"categories":[1],"tags":[],"bugskan_format":[3],"bugskan_technology":[14],"class_list":["post-125","post","type-post","status-publish","format-standard","hentry","category-uncategorized","bugskan_format-research-explained","bugskan_technology-claude"],"_links":{"self":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts\/125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/comments?post=125"}],"version-history":[{"count":1,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts\/125\/revisions"}],"predecessor-version":[{"id":344,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts\/125\/revisions\/344"}],"wp:attachment":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/media?parent=125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/categories?post=125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/tags?post=125"},{"taxonomy":"bugskan_format","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/bugskan_format?post=125"},{"taxonomy":"bugskan_technology","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/bugskan_technology?post=125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}