CVE-2026-75529
MediumCVSS 6.9Exploitation Probability (EPSS)
Low risk20th percentile - higher than 20% of all known CVEs
Summary
Pandora is affected by a stored XSS vulnerability in the PDF download functionality. The /task-download/<task_id>/.../pdf endpoint verifies the file is a PDF but returns it without explicit MIME type, allowing it to be served as HTML or another active format. A crafted PDF/polyglot can execute script in the Pandora application context.
Risk Assessment
Risk of malicious script execution in victim's browser, potentially leading to session theft or unauthorized actions.
Recommendation
Apply the patch that forces Content-Type: application/pdf and Content-Disposition: attachment.
Other vulnerabilities in Pandora
See all- CVE-2026-88069Critical
Pandora contains a path traversal vulnerability in its archive extraction worker. When processing a specially crafted archive or disk image, attacker-controlled file paths could be used without ensuring that the resulting destination remained within the intended extraction directory. An attacker able to submit a malicious file for analysis could use path traversal sequences or crafted paths to cause extracted content to be written outside the designated extraction directory, potentially overwriting files accessible to the Pandora worker process.
- CVE-2026-74764Critical
Pandora contains a path traversal vulnerability in its TAR archive extraction functionality. When processing a TAR archive, member names are passed directly to Python's tarfile.TarFile.extract() without an extraction filter. An attacker can submit a crafted TAR archive with malicious paths, allowing files to be written outside the intended directory.
- CVE-2026-75531High
Pandora contains a stored XSS vulnerability in the rendering of URL observables. A malicious URL can be injected into the inline JavaScript onclick handler, allowing arbitrary JavaScript execution in the application context.
- CVE-2026-74767High
Pandora contains a denial-of-service vulnerability in its handling of DAA (Direct Access Archive) files. When extracting the internal ISO image, compressed chunks are decompressed using zlib.decompress() without enforcing a limit on the resulting uncompressed data. An attacker can submit a crafted DAA file with highly compressed data, causing excessive memory and CPU consumption, potentially making the extraction worker unresponsive or terminating it, affecting service availability.
Original NVD description (English source)
Pandora is affected by a stored cross-site scripting vulnerability in the PDF download functionality. The /task-download/<task_id>/.../pdf endpoint verifies that the submitted file is a PDF using Pandora's content-based file-type detection, but previously returned the file using send_file(task.file.path) without explicitly specifying the MIME type or forcing it to be downloaded as an attachment. Because Flask determines the response MIME type from the filename when a path is supplied, an attacker could submit a file whose content is recognized by Pandora as a PDF while its filename or extension causes the download endpoint to return it with a different, potentially active MIME type. A specially crafted PDF/polyglot file could therefore be served inline and interpreted by a victim's browser as HTML or another executable web format. If a victim with access to the submitted analysis follows the PDF download link, attacker-controlled script could execute in the security context of the Pandora application, potentially allowing access to application data or actions using the victim's session. The patch prevents the issue by explicitly returning PDF downloads with Content-Type: application/pdf, forcing Content-Disposition: attachment, and assigning a trusted .pdf filename based on the task UUID.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS