EUVD-2026-16610Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/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
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/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
Lifecycle Timeline
4DescriptionGitHub Advisory
calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to version 9.6.0, a Server-Side Request Forgery vulnerability in the background-image endpoint of calibre e-book reader's web view allows an attacker to perform blind GET requests to arbitrary URLs and exfiltrate information out from the ebook sandbox. Version 9.6.0 patches the issue.
AnalysisAI
Server-Side Request Forgery in calibre's background-image endpoint allows remote attackers to perform blind GET requests to arbitrary URLs and exfiltrate sensitive information from the e-book sandbox prior to version 9.6.0. Calibre versions before 9.6.0 are affected, with vendor-released patch available at version 9.6.0 or later. …
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Vulnerability AssessmentAI
| Risk Assessment | Real-world risk is moderate-to-high despite absent CVSS scoring and EPSS data in available sources. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker creates a specially crafted e-book file (EPUB, AZW, or similar format) that embeds a malicious background-image URL pointing to an internal service, such as http://169.254.169.254/latest/meta-data (AWS metadata endpoint) or http://localhost:8080/admin/config. When a user opens the e-book in calibre versions prior to 9.6.0, the web view renderer automatically requests the background-image, causing the calibre server to perform the SSRF request. … |
| Remediation | Upgrade calibre to version 9.6.0 or later immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …
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Vendor StatusVendor
SUSE
Severity: MediumShare
External POC / Exploit Code
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