---
title: "CVE-2026-106486: Backstage @backstage/plugin-scaffolder-backend-module-bitbucket - Path Traversal"
description: "Backstage @backstage/plugin-scaffolder-backend-module-bitbucket-cloud < 0.3.10 and @backstage/plugin-scaffolder-backend-module-bitbucket-server < 0.2.25 contain a path traversal caused by insufficient validation of filesystem paths in Bitbucket pull-request Scaffolder actions, letting authenticated users affect paths outside the expected working area, potentially compromising backend confidentiality, integrity, or availability."
url: https://panop.io/threat-heartbeat/CVE-2026-106486/
---

# CVE-2026-106486 Backstage @backstage/plugin-scaffolder-backend-module-bitbucket - Path Traversal

Backstage @backstage/plugin-scaffolder-backend-module-bitbucket-cloud < 0.3.10 and @backstage/plugin-scaffolder-backend-module-bitbucket-server < 0.2.25 contain a path traversal caused by insufficient validation of filesystem paths in Bitbucket pull-request Scaffolder actions, letting authenticated users affect paths outside the expected working area, potentially compromising backend confidentiality, integrity, or availability.

CVSS base score 8.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.33% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-106486)

## Details

Type

Path Traversal

Impact

Information Disclosure, Data Tampering, Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Published

6 October 2026

Updated

15 October 2026

Weakness

[CWE-22](https://cwe.mitre.org/data/definitions/22.html)

## Vendor fix

Update to @backstage/plugin-scaffolder-backend-module-bitbucket-cloud 0.3.10 and @backstage/plugin-scaffolder-backend-module-bitbucket-server 0.2.25 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-106486](https://nvd.nist.gov/vuln/detail/CVE-2026-106486)
- [https://github.com/backstage/backstage/commit/818528e112c36167d76187e9e63fb518399c4dd2](https://github.com/backstage/backstage/commit/818528e112c36167d76187e9e63fb518399c4dd2)
- [https://github.com/backstage/backstage/releases/tag/v1.54.6](https://github.com/backstage/backstage/releases/tag/v1.54.6)
- [https://github.com/backstage/backstage/security/advisories/GHSA-g8rx-f7m5-7794](https://github.com/backstage/backstage/security/advisories/GHSA-g8rx-f7m5-7794)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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