CVE intelligence and bounded remediation
CVE-2024-24756 — Crafatar serves Minecraft avatars based on the skin for use in external applications
Crafatar serves Minecraft avatars based on the skin for use in external applications. Files outside of the `lib/public/` directory can be requested from the server. Instances running behind Cloudflare (including crafatar.com) are not affected. Instances using the Docker container as shown in the README are affected, but only files within the container can be read. By default, all of the files within the container can also be found in this repository and are not confidential. This vulnerability is patched in 2.1.5.
- Severity
- High
- CVSS
- 7.5 (3.1)
- Published
- 2024-02-01
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-22
Affected products
- crafatar / crafatar
Matched remediation archetype
Path traversal, unsafe upload, and file handling
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
- Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
- Review canonicalization and containment checks across supported operating systems and storage backends.
Remediate safely
- Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
- Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
- Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.
Authoritative sources
Complete CVE record and remediation plan
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