CVE-2026-33206 | kovidgoyal calibre up to 9.5.x path traversal

VDB-353936 · CVE-2026-33206 · GCVE-0-2026-33206 KOVIDGOYAL CALIBRE UP TO 9.5.X PATH TRAVERSAL HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.2 $0-$5k 1.45+ Summaryinfo A vulnerability, which was classified as problematic, was found in kovidgoyal calibre up to 9.5.x. Affected by this vulnerability is an unknown functionality. Such manipulation leads to path traversal. This vulnerability is documented as CVE-2026-33206. The attack needs to be performed locally. There is not any exploit available. You should upgrade the affected component. Detailsinfo A vulnerability, which was classified as problematic, has been found in kovidgoyal calibre up to 9.5.x. Affected by this issue is some unknown functionality. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-23. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. Impacted is confidentiality. CVE summarizes: calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to version 9.6.0, a path traversal vulnerability exists in Calibre' handling of images in Markdown and other similar text-based files allowing an attacker to include arbitrary files from the file system into the converted book. Additionally, missing authentication and server-side request forgery in the background-image endpoint in the ebook reader web view allow the files to be exfiltrated without additional interaction. Version 9.6.0 contains a fix. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-33206 since 03/18/2026. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006. Upgrading to version 9.6.0 eliminates this vulnerability. Productinfo Vendor kovidgoyal Name calibre Version 9.0 9.1 9.2 9.3 9.4 9.5 Website Product: https://github.com/kovidgoyal/calibre/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 3.3 VulDB Meta Temp Score: 3.2 VulDB Base Score: 3.3 VulDB Temp Score: 3.2 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Path traversal CWE: CWE-23 / CWE-22 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: Partially Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: calibre 9.6.0 Timelineinfo 03/18/2026 CVE reserved 03/27/2026 +9 days Advisory disclosed 03/27/2026 +0 days VulDB entry created 03/27/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: github.com Status: Confirmed CVE: CVE-2026-33206 (🔒) GCVE (CVE): GCVE-0-2026-33206 GCVE (VulDB): GCVE-100-353936 Entryinfo Created: 03/27/2026 15:51 Changes: 03/27/2026 15:51 (65) Complete: 🔍 Cache ID: 99:264:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸