{"document":{"category":"csaf_vex","csaf_version":"2.1","notes":[{"category":"summary","text":"Palo Alto Networks PSIRT provided VEX document. This document is autogenerated.","title":"Impact of CVE-2024-1135"}],"publisher":{"category":"vendor","name":"Palo Alto Networks","namespace":"https://security.paloaltonetworks.com"},"title":"Palo Alto Networks PSIRT provided VEX document: CVE-2024-1135","distribution":{"text":"Copyright © 2024 Palo Alto Networks. All rights reserved.","tlp":{"label":"CLEAR","url":"https://www.first.org/tlp/"}},"tracking":{"current_release_date":"2026-04-11T00:33:58.561Z","generator":{"date":"2026-04-11T00:33:58.561Z","engine":{"name":"Vulnogram","version":"0.1.0-dev"}},"id":"CVE-2024-1135","initial_release_date":"2025-02-12T17:00:00.000Z","revision_history":[{"number":"1","date":"2026-04-10T17:33:58.000Z","summary":"Initial release"}],"status":"final","version":"1"}},"product_tree":{"branches":[{"name":"Palo Alto Networks","category":"vendor","branches":[{"name":"Cortex XDR Broker VM","category":"product_name","branches":[{"category":"product_version_range","name":"vers:generic/Cortex XDR Broker VM<25.105.6","product":{"name":"Palo Alto Networks Cortex XDR Broker VM","product_id":"PANW-Cortex-XDR-Broker-VM-1"}},{"category":"product_version_range","name":"vers:generic/Cortex XDR Broker VM>=25.105.6","product":{"name":"Palo Alto Networks Cortex XDR Broker VM","product_id":"PANW-Cortex-XDR-Broker-VM-1"}}]}]}]},"vulnerabilities":[{"cve":"CVE-2024-1135","product_status":{"fixed":["PANW-Cortex-XDR-Broker-VM-1"],"known_affected":["PANW-Cortex-XDR-Broker-VM-1"]},"notes":[{"category":"description","text":"Gunicorn fails to properly validate Transfer-Encoding headers, leading to HTTP Request Smuggling (HRS) vulnerabilities. By crafting requests with conflicting Transfer-Encoding headers, attackers can bypass security restrictions and access restricted endpoints. This issue is due to Gunicorn's handling of Transfer-Encoding headers, where it incorrectly processes requests with multiple, conflicting Transfer-Encoding headers, treating them as chunked regardless of the final encoding specified. This vulnerability allows for a range of attacks including cache poisoning, session manipulation, and data exposure."}],"references":[{"category":"external","summary":"NVD - CVE-2024-1135","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-1135"},{"category":"self","summary":"Palo Alto Networks Security Advisory CVE-2024-1135","url":"https://security.paloaltonetworks.com/CVE-2024-1135"}],"threats":[{"category":"impact","description":"Gunicorn fails to properly validate Transfer-Encoding headers, leading to HTTP Request Smuggling (HRS) vulnerabilities. By crafting requests with conflicting Transfer-Encoding headers, attackers can bypass security restrictions and access restricted endpoints. This issue is due to Gunicorn's handling of Transfer-Encoding headers, where it incorrectly processes requests with multiple, conflicting Transfer-Encoding headers, treating them as chunked regardless of the final encoding specified. This vulnerability allows for a range of attacks including cache poisoning, session manipulation, and data exposure."}]}]}