No VulnCrest analysis published for this CVE yet. Below is the original CNA/NVD description, unmodified.
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.
Exploits & detection
No public PoC or detection template found yet.
Timeline
- Published: 05 Nov 2026
- Last modified upstream: 09 Nov 2026
Sources & licenses
- CVE / CVSS / CWE
- NVD record ↗ (unmodified). This product uses the NVD API but is not endorsed or certified by the NVD. CVE® © The MITRE Corporation.
- Exploitation
- CISA KEV (CC0) · EPSS by FIRST.org
- References used for the analysis
- https://github.com/jarun/buku/blob/e232ac357cbba22fe69d6d6dfc0d35512a4cd313/buku.py#L4057-L4084
- https://github.com/jarun/buku/blob/e232ac357cbba22fe69d6d6dfc0d35512a4cd313/bukuserver/api.py#L97-L105
- https://github.com/jarun/buku/commit/13f6497afc974f02f1069b760772abe8815d1675
- https://github.com/jarun/buku/issues/910
- https://github.com/jarun/buku/pull/916
- https://www.vulncheck.com/advisories/buku-through-5.1.1-ssrf-via-bukuserver-fetch-data-and-network-handle-api
- Analysis, summary and remediation
- © VulnCrest