https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-06T23:54:02.667092+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cnvd-2020-16632 cnvd-2020-16632 2026-10-06T23:54:02.670376+00:00 cnvd-2020-16632 https://cve.radiocsirt.org/vuln/euvd-2026-36479 EUVD-2026-36479 2026-10-06T23:54:02.670409+00:00 EUVD-2026-36479 https://cve.radiocsirt.org/vuln/fkie_cve-2020-5256 fkie_cve-2020-5256 2026-10-06T23:54:02.670423+00:00

BookStack before version 0.25.5 has a vulnerability where a user could upload PHP files through image upload functions, which would allow them to execute code on the host system remotely. They would then have the permissions of the PHP process. This most impacts scenarios where non-trusted users are given permission to upload images in any area of the application. The issue was addressed in a series of patches in versions 0.25.3, 0.25.4 and 0.25.5. Users should upgrade to at least v0.25.5 to avoid this vulnerability.

 https://cve.radiocsirt.org/vuln/ghsa-g9rq-x4fj-f5hx GHSA-g9rq-x4fj-f5hx — Remote Code Execution Through Image Uploads in BookStack 2026-10-06T23:54:02.670454+00:00

Affected: Packagist: ssddanbrown/bookstack

### Impact

A user could upload PHP files through image upload functions, which would allow them to execute code on the host system remotely. They would then have the permissions of the PHP process.

This most impacts scenarios where non-trusted users are given permission to upload images in any area of the application.

### Patches

The issue was addressed in a series of patches: v0.25.3, v0.25.4 and v0.25.5. Users should upgrade to at least v0.25.5 to avoid this patch but ideally the latest BookStack version as previous versions are un-supported.

### Workarounds

Depending on BookStack version, you could use the [local_secure](https://www.bookstackapp.com/docs/admin/upload-config/#local-secure) image storage option, or use s3 or a similar compatible service.

Preventing direct execution of any `php` files, apart from the `public/index.php` file, though web-server configuration would also prevent this.

### References

[BookStack Beta v0.25.3](https://github.com/BookStackApp/BookStack/releases/tag/v0.25.3) [BookStack Beta v0.25.4](https://github.com/BookStackApp/BookStack/releases/tag/v0.25.4) [BookStack Beta v0.25.5](https://github.com/BookStackApp/BookStack/releases/tag/v0.25.5)

### For more information

If you have any questions or comments about this advisory: * Open an issue in [the BookStack GitHub repository](BookStackApp/BookStack/issues). * Ask on the [BookStack Discord chat](https://discord.gg/ztkBqR2). * Follow the [BookStack Security advise](https://github.co…

 https://cve.radiocsirt.org/vuln/gsd-2020-5256 gsd-2020-5256 2026-10-06T23:54:02.670499+00:00 gsd-2020-5256