`@backstage/backend-common` vulnerable to path traversal through symlinks

CVE-2024-26150 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

Paths checks with the resolveSafeChildPath utility were not exhaustive enough, leading to risk of path traversal vulnerabilities if symlinks can be injected by attackers.

Patches

Patched in @backstage/backend-common version 0.21.1.
Patched in @backstage/backend-common version 0.20.2.
Patched in @backstage/backend-common version 0.19.10.

For more information

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Basic information

Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2024-02-23 18:02:08 UTC
Updated
2026-03-24 05:05:03 UTC
GitHub reviewed
2024-02-23 18:02:08 UTC
NVD published
2024-02-23

EPSS Score

Score Percentile
0.50% 65.84%

CVSS Scores

Base score Version Severity Vector
8.7 3.1 —
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-2fc9-xpp8-2g9h ↗
CVE CVE-2024-26150 ↗

CWEs

CWE id Name
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected packages (3)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
npm @backstage/backend-common = 0.21.0 0.21.1 —
npm @backstage/backend-common < 0.19.10 0.19.10 —
npm @backstage/backend-common >= 0.20.0, < 0.20.2 0.20.2 —

References

cvelogic Threat Intelligence