CVE-2026-29185

LOW

Backstage Integration < 1.20.1 - Path Traversal via Encoded SCM URL

Title source: llm
STIX 2.1

Description

Backstage is an open framework for building developer portals. Prior to version 1.20.1, a vulnerability in the SCM URL parsing used by Backstage integrations allowed path traversal sequences in encoded form to be included in file paths. When these URLs were processed by integration functions that construct API URLs, the traversal segments could redirect requests to unintended SCM provider API endpoints using the configured server-side integration credentials. This issue has been patched in version 1.20.1.

References (1)

Core 1
Core References

Scores

CVSS v3 2.7
EPSS 0.0035
EPSS Percentile 26.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-22
Status published
Products (3)
backstage/integration 0 - 1.20.1npm
linuxfoundation/\@backstage\/integration < 1.20.1
linuxfoundation/backstage\/integration < 1.20.1
Published Mar 07, 2026
Tracked Since Mar 07, 2026