id: PYSEC-2026-1226
published: "2026-07-07T16:02:59.100727Z"
modified: "2026-07-07T17:23:52.326462Z"
aliases:
- CVE-2025-54433
- GHSA-q78p-g86f-jg6q
summary: Bugsink path traversal via event_id in ingestion
details: "## Summary\n\nIn 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.\n\nSubmitting 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.\n\n## Impact\n\nA 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.\n\nIf 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.\n\n## Mitigation\n\nUpdate 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:
- package:
    name: bugsink
    ecosystem: PyPI
    purl: pkg:pypi/bugsink
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 1.4.3
    - introduced: 1.5.0
    - fixed: 1.5.5
    - introduced: 1.6.0
    - fixed: 1.6.4
    - introduced: 1.7.0
    - fixed: 1.7.4
    - introduced: 1.6.0
    - fixed: 1.6.4
  versions:
  - 0.0.1
  - 0.1.12
  - 0.1.13
  - 0.1.14
  - 0.1.15
  - 0.1.16
  - 0.1.17
  - 0.1.18
  - 0.1.19
  - 0.1.20
  - 1.0.0
  - 1.0.1
  - 1.1.0
  - 1.1.1
  - 1.1.2
  - 1.2.0
  - 1.3.0
  - 1.4.0
  - 1.4.1
  - 1.4.2
  - 1.5.0
  - 1.5.1
  - 1.5.2
  - 1.5.3
  - 1.5.4
  - 1.6.0
  - 1.6.1
  - 1.6.2
  - 1.6.3
  - 1.7.0
  - 1.7.1
  - 1.7.2
  - 1.7.3
references:
- type: WEB
  url: https://github.com/bugsink/bugsink/security/advisories/GHSA-q78p-g86f-jg6q
- type: ADVISORY
  url: https://nvd.nist.gov/vuln/detail/CVE-2025-54433
- type: WEB
  url: https://github.com/bugsink/bugsink/commit/1001726f4389e982c486cdd5fa81941cb46cfc33
- type: WEB
  url: https://github.com/bugsink/bugsink/commit/211ddf76758c808c095b5f836c363f148d934d21
- type: WEB
  url: https://github.com/bugsink/bugsink/commit/2c41fbe3881bdea83399a7f9fdc8cff198ae089f
- type: WEB
  url: https://github.com/bugsink/bugsink/commit/53cf1a17a3e96f7c83c7451fd56f980a09d0c9b0
- type: WEB
  url: https://github.com/bugsink/bugsink/commit/55a155003d0b416ea008c5e7dcde85130ad21d9b
- type: WEB
  url: https://github.com/bugsink/bugsink/commit/b94aa8a5c96ce8cdd9711b6beb4e518264993ac2
- type: WEB
  url: https://github.com/bugsink/bugsink/commit/c341687bd655543730c812db35c29199f788be6b
- type: WEB
  url: https://github.com/bugsink/bugsink/commit/c87217bd565122ba70af90436e3ab2cd9bee658f
- type: PACKAGE
  url: https://github.com/bugsink/bugsink
- type: PACKAGE
  url: https://pypi.org/project/bugsink
- type: ADVISORY
  url: https://github.com/advisories/GHSA-q78p-g86f-jg6q
severity:
- type: CVSS_V4
  score: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N