[CVE-2023-39631] Beyond the Bands: Exploiting TiTiler’s Expression Parser for Remote Code Execution
xbow.com | vulnerability | Critical | CVE-2023-39631 | #rce | #vulnerability-research | #python | #code-execution | #titiler | #expression-parser
Summary
A methodical study of TiTiler's expression parser that ends in arbitrary Python code execution on the server, with a bonus arbitrary file read saved for a follow-up post.
- CVE
- CVE-2023-39631
- CVSS
- 9.8
- Published
- Collected
--- id: 5212 title: "[CVE-2023-39631] Beyond the Bands: Exploiting TiTiler’s Expression Parser for Remote Code Execution" cve: CVE-2023-39631 cvss: 9.8 severity: critical source_domain: xbow.com source_url: "https://xbow.com/blog/xbow-titiler-rce" published_at: "2025-07-25T12:00:00Z" tags: ["rce", "vulnerability-research", "python", "code-execution", "titiler", "expression-parser"] phying_url: "https://phying.com/item/5212" lang: en --- # [CVE-2023-39631] Beyond the Bands: Exploiting TiTiler’s Expression Parser for Remote Code Execution ## Summary A methodical study of TiTiler's expression parser that ends in arbitrary Python code execution on the server, with a bonus arbitrary file read saved for a follow-up post. ## Intelligence Metadata - **Sources:** xbow.com - **CVE:** CVE-2023-39631 - **CVSS:** 9.8 - **Published:** 2025-07-25T12:00:00Z - **Original:** https://xbow.com/blog/xbow-titiler-rce - **Phying News:** https://phying.com/item/5212