Spring Security Advisories

CVE-2026-41863: LLM-influenced filename used unsanitized in Path.resolve before file write in Spring AI support for Anthropic Skills API

MEDIUM | MAY 23, 2026 | CVE-2026-41863

Description

Spring AI's support for Anthropic's Skills API used LLM-influenced filenames unsanitized in Path.resolve before writing files to disk. This could allow a malicious user to write files outside the intended target directory, including restricted directories.

Affected Spring Products and Versions

Spring AI:

1.1.0 - 1.1.x

Mitigation

Users of affected versions should upgrade to the corresponding fixed version.

Affected version(s)	Fix version	Availability
1.1.x	1.1.7	OSS

References

- https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N&version=3.1

Reporting a vulnerability

To report a security vulnerability for a project within the Spring portfolio, see the Security Policy