CVE-2026-33205

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,9.6.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "calibre", "source": "cna", "vendor": "kovidgoyal"}, "product": "calibre", "vendor": "kovidgoyal"}], "analysis": {"en": {"generated_at": "2026-03-31T06:06:16.440488+00:00", "value": {"mitigation_remediation": ["Upgrade calibre to version 9.6.0 or later."], "summary": {"action": "Apply Patch", "impact": "Information Exposure"}, "threat_synthesis": {"affected_systems": "The issue affects the calibre e\u2011book manager developed by Kovidgoyal. All installations of calibre prior to version 9.6.0, regardless of operating system, are vulnerable because the flaw resides in the cross\u2011platform ebook viewer component. Users running 9.5.x or earlier remain at risk.", "description_and_impact": "The vulnerability is a server\u2011side request forgery in the background\u2011image endpoint of calibre\u2019s e\u2011book viewer. By sending a crafted request to this endpoint, an attacker can cause calibre to perform blind GET requests to arbitrary URLs from the device it runs on, enabling the exfiltration of data that the application can reach. This weakness, classified as CWE\u2011918, allows information disclosure beyond the intended sandbox of the e\u2011book.", "risk_and_exploitability": "The CVSS score of 4.8 indicates a moderate risk, while the EPSS score of less than 1\u202f% suggests a low probability of exploitation today. The recommendation is not listed in CISA\u2019s KEV catalog. The description indicates that an attacker may trigger the SSRF by targeting the background\u2011image endpoint; however, the CVE entry does not specify the exact prerequisites or authentication required, so the precise attack surface is uncertain. Given the limited probability of exploitation and lack of public exploitation evidence, the threat is moderate but warrants timely remediation."}}}}, "created": "2026-03-27T20:28:49.559917+00:00", "updated": "2026-03-31T20:01:18.485609+00:00", "vendors": ["kovidgoyal", "kovidgoyal$PRODUCT$calibre"]}