Medium severity5.3NVD Advisory· Published Nov 5, 2026
CVE-2026-123201
CVE-2026-123201
Description
Buku (bukuserver) through 5.1.1 contains an unauthenticated server-side request forgery vulnerability that allows remote attackers to make the server request internal hosts by supplying a url parameter to /api/fetch_data or /api/network_handle. Attackers can target loopback, private, or cloud metadata IP addresses, which pass the weak is_bad_url() check and follow redirects, to discover internal services and read their page titles, descriptions, and keywords.
Affected products
1Patches
Vulnerability mechanics
References
6- github.com/jarun/buku/blob/e232ac357cbba22fe69d6d6dfc0d35512a4cd313/buku.pynvd
- github.com/jarun/buku/blob/e232ac357cbba22fe69d6d6dfc0d35512a4cd313/bukuserver/api.pynvd
- github.com/jarun/buku/commit/13f6497afc974f02f1069b760772abe8815d1675nvd
- github.com/jarun/buku/issues/910nvd
- github.com/jarun/buku/pull/916nvd
- www.vulncheck.com/advisories/buku-through-5.1.1-ssrf-via-bukuserver-fetch-data-and-network-handle-apinvd
News mentions
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