Medium severity4.9NVD Advisory· Published Nov 3, 2026· Updated Nov 3, 2026
CVE-2026-121544
CVE-2026-121544
Description
Koodo Reader through 2.4.6 contains a path traversal vulnerability in the self-hosted HTTP server's OPDS handlers that allows authenticated attackers to read files outside the upload directory. Attackers can upload a crafted books.db with a cover value containing ../ sequences, then request /opds/cover/{key} to read files accessible to the server process.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1- Range: <=2.4.6
Patches
Vulnerability mechanics
References
6- github.com/koodo-reader/koodo-reader/blob/v2.4.6/httpserver/opds.gonvd
- github.com/koodo-reader/koodo-reader/blob/v2.4.6/httpserver/opds.gonvd
- github.com/koodo-reader/koodo-reader/commit/cbc79a1ab5cbbd61c8252d6ab3cc6dbb694663b8nvd
- github.com/koodo-reader/koodo-reader/compare/205539043b0a2afd9fd8bf99ef8434bd1833c2bf...cbc79a1ab5cbbd61c8252d6ab3cc6dbb694663b8nvd
- github.com/koodo-reader/koodo-reader/issues/1654nvd
- www.vulncheck.com/advisories/koodo-reader-through-2.4.6-path-traversal-via-opds-cover-and-download-handlersnvd
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