CVE-2026-16221 Affecting tileserver-gl-fips package, versions <5.6.0-r9
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published25 Jul 2026
- disclosed19 Jul 2026
Introduced: 19 Jul 2026
NewCVE-2026-16221 (opens in a new tab)How to fix?
Upgrade Chainguard tileserver-gl-fips to version 5.6.0-r9 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream tileserver-gl-fips package and not the tileserver-gl-fips package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
Impact: fast-uri versions from 2.3.1 through 4.1.0 (including the 3.x line up to 3.1.3 and the 2.x line up to 2.4.2) do not treat a literal backslash character (U+005C) as an authority delimiter. Node's native WHATWG URL parser, used by fetch, undici, and Node's http and https clients, normalizes the backslash to a forward slash for special schemes such as http, https, ws, wss, ftp, and file. As a result, the two parsers extract different hosts from the same input string. Applications that use fast-uri to enforce host-based policy such as allowlists, denylists, loopback or SSRF filtering, redirect validation, or outbound proxy routing before passing the same URL into Node's URL or fetch consumers can be steered to an unintended destination, including cloud metadata endpoints, loopback, or internal hosts.
Patches: upgrade to fast-uri 4.1.1, 3.1.4, or 2.4.3.
Workarounds: none.