CVE-2026-57957 | BDVDB-2026-344075 Detail

Description#

Papermark through 0.22.0 contains a cross-origin resource sharing (CORS) misconfiguration vulnerability that allows unauthenticated remote attackers to perform credentialed cross-origin requests by exploiting the TUS-based viewer upload endpoint reflecting arbitrary request Origins with Access-Control-Allow-Credentials set to true. Attackers can lure authenticated victims to malicious pages that silently issue credentialed cross-origin requests to upload arbitrary files into victim datarooms and read credentialed responses.

Impact#

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Exploit#

History#

1. Version 12026-06-29Record published in the CVE List.
2. Version 22026-11-08Most recent update recorded in the CVE List.