CPE prefix: cpe:2.3:a:libjxl_project:libjxl

To report a security issue, please email libjxl-security@google.com.

Include in your email a description of the issue, the steps you took to create the issue, affected versions, and if known, mitigations for the issue. Our vulnerability management team will acknowledge receiving your email within 3 working days.

This project follows a 90 day disclosure timeline.

For all other bugs, where there are no security implications about disclosing the unpatched bug, open a new issue checking first for existing similar issues. If in doubt about the security impact of a bug you discovered, email first.

libjxl's Security Policy is based on the Google Open Source program guidelines for coordinated vulnerability disclosure.

Early versions of libjxl had a different security policy that didn't provide security and vulnerability disclosure support. Versions up to and including 0.3.7 are not covered and won't receive any security advisory.

Only released versions, starting from version 0.5, are covered by this policy. Development branches, arbitrary commits from main branch or even releases with backported features externally patched on top are not covered. Only those versions with a release tag in libjxl's repository are covered, starting from version 0.5.

A security bug is a bug that can potentially be exploited to let an attacker gain unauthorized access or privileges such as disclosing information or arbitrary code execution. Not all fuzzer-found bugs and not all assert() failures are considered security bugs in libjxl. For a detailed explanation and examples see our Security Vulnerabilities Playbook.

To report a security issue, please email libjxl-security@google.com with all the details about the bug you encountered.

• Include a description of the issue, steps to reproduce, etc. Compiler versions, flags, exact version used and even CPU are often relevant given our usage of SIMD and run-time dispatch of SIMD instructions.

• A member of our security team will reply to you within 3 business days. Note that business days are different in different countries.

• We will evaluate the issue and we may require more input from your side to reproduce it.

• If the issue fits in the description of a security bug, we will issue a CVE, publish a fix and make a new minor or patch release with it. There is a maximum of 90 day disclosure timeline, we ask you to not publish the details before the 90 day deadline or the release date (whichever comes first).

• In the case that we publish a CVE we will credit the external researcher who reported the issue. When reporting security issues please let us know if you need to include specific information while doing so, like for example a company affiliation.

Our security team follows the Security Vulnerabilities Playbook. For more details about the process and policies please take a look at it.