---
id: CVE-2025-54433
aliases:
  - GHSA-q78p-g86f-jg6q
  - PYSEC-2026-1226
title: Bugsink path traversal via event_id in ingestion
summary: Bugsink path traversal via event_id in ingestion
severity: high
vendor: bugsink
product: bugsink
ecosystem: pip
affected:
  - 'bugsink >= 1.7.0, < 1.7.4'
  - 'bugsink >= 1.6.0, < 1.6.4'
  - 'bugsink >= 1.5.0, < 1.5.5'
  - bugsink < 1.4.3
patched:
  - bugsink 1.7.4
  - bugsink 1.6.4
  - bugsink 1.5.5
  - bugsink 1.4.3
published: '2025-07-29'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-q78p-g86f-jg6q'
references:
  - url: 'https://github.com/bugsink/bugsink/security/advisories/GHSA-q78p-g86f-jg6q'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-54433'
  - url: >-
      https://github.com/bugsink/bugsink/commit/1001726f4389e982c486cdd5fa81941cb46cfc33
  - url: >-
      https://github.com/bugsink/bugsink/commit/211ddf76758c808c095b5f836c363f148d934d21
  - url: >-
      https://github.com/bugsink/bugsink/commit/2c41fbe3881bdea83399a7f9fdc8cff198ae089f
  - url: >-
      https://github.com/bugsink/bugsink/commit/53cf1a17a3e96f7c83c7451fd56f980a09d0c9b0
  - url: >-
      https://github.com/bugsink/bugsink/commit/55a155003d0b416ea008c5e7dcde85130ad21d9b
  - url: >-
      https://github.com/bugsink/bugsink/commit/b94aa8a5c96ce8cdd9711b6beb4e518264993ac2
  - url: >-
      https://github.com/bugsink/bugsink/commit/c341687bd655543730c812db35c29199f788be6b
  - url: >-
      https://github.com/bugsink/bugsink/commit/c87217bd565122ba70af90436e3ab2cd9bee658f
  - url: 'https://github.com/bugsink/bugsink'
tags:
  - osv
  - pip
epss: 0.00555
epssPercentile: 0.43928
ingestedAt: '2026-07-08T18:25:52.116Z'
---

## Overview

## Summary

In affected versions, ingestion paths construct file locations directly from untrusted `event_id` input without validation. A specially crafted `event_id` can result in paths outside the intended directory, potentially allowing file overwrite or creation in arbitrary locations.

Submitting such input requires access to a valid DSN. While that limits exposure, DSNs are sometimes discoverable—for example, when included in frontend code—and should not be treated as a strong security boundary.

## Impact

A valid DSN holder can craft an `event_id` that causes the ingestion process to write files outside its designated directory. This allows overwriting files accessible to the user running Bugsink.

If Bugsink runs in a container, the effect is confined to the container’s filesystem. In non-containerized setups, the overwrite may affect other parts of the system accessible to that user.

## Mitigation

Update to version `1.7.4`, `1.6.4`, `1.5.5` or `1.4.3` , which require `event_id` to be a valid UUID and normalizes it before use in file paths.

## Affected packages

- `bugsink >= 1.7.0, < 1.7.4`
- `bugsink >= 1.6.0, < 1.6.4`
- `bugsink >= 1.5.0, < 1.5.5`
- `bugsink < 1.4.3`

## Remediation

Upgrade to a patched release:

- `bugsink 1.7.4`
- `bugsink 1.6.4`
- `bugsink 1.5.5`
- `bugsink 1.4.3`