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Backstage CVE-2024-45816

MEDIUM
Relative Path Traversal (CWE-23)
2024-09-17 security-advisories@github.com
6.5
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Relative path traversal prevention
Impact

CVSS score of 6.5 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.7% exploitation probability (EPSS)

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AnalysisAI

Backstage is an open framework for building developer portals. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

npm @backstage/plugin-techdocs-backend fix: 1.10.13

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in npm

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-23. Backstage is an open framework for building developer portals. When using the AWS S3 or GCS storage provider for TechDocs it is possible to access content in the entire storage bucket. This can leak contents of the bucket that are not intended to be accessible, as well as bypass permission checks in Backstage. This has been fixed in the 1.10.13 release of the @backstage/plugin-techdocs-backend package. All users are advised to upgrade. There are no known workarounds for this vulnerability. Affected products include: Linuxfoundation Backstage.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

DescriptionNVD

Backstage is an open framework for building developer portals. When using the AWS S3 or GCS storage provider for TechDocs it is possible to access content in the entire storage bucket. This can leak contents of the bucket that are not intended to be accessible, as well as bypass permission checks in Backstage. This has been fixed in the 1.10.13 release of the @backstage/plugin-techdocs-backend package. All users are advised to upgrade. There are no known workarounds for this vulnerability.

Threat Intelligence Overview

EPSS Score
0.7%
Top 50% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.7%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

33
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
CVE-2026-106486 CRITICAL
9.9 Oct 06

The Bitbucket pull-request Scaffolder actions in Backstage can be abused by an authenticated user with template-executio

CVE-2023-35926 CRITICAL
9.9 Jun 22

Backstage is an open platform for building developer portals. Rated critical severity (CVSS 9.9), this vulnerability is

CVE-2026-106501 CRITICAL
9.6 Oct 06

Authenticated Backstage users can retrieve the internal execution data of other users' Scaffolder tasks - notably the Se

CVE-2026-88064 HIGH
8.8 Sep 16

Authenticated users who can register or modify a TechDocs documentation source can achieve code execution inside the Bac

CVE-2026-106558 HIGH
8.8 Oct 07

Authenticated remote code execution in the @backstage/plugin-techdocs-node package shipped with the Backstage developer

CVE-2026-106509 HIGH
8.8 Oct 06

Arbitrary code execution in Backstage TechDocs documentation builds allows an authenticated user with write access to a

CVE-2026-25153 HIGH
8.8 Jan 30

Arbitrary Python code execution in Backstage's @backstage/plugin-techdocs-node (versions < 1.13.11 and = 1.14.0) lets a

CVE-2026-106500 HIGH
8.5 Oct 06

Improper task-state validation in the @backstage/plugin-scaffolder-backend plugin (Backstage versions prior to 3.3.1, 3.

CVE-2026-106505 HIGH
8.5 Oct 06

Arbitrary code execution on the TechDocs backend host is achievable through a sanitizer bypass in the @backstage/plugin-

CVE-2026-106459 HIGH
8.5 Oct 06

Improper input validation in the @backstage/plugin-scaffolder-backend-module-sentry scaffolder actions (Backstage 0.3.0

CVE-2021-43783 HIGH
8.5 Nov 29

@backstage/plugin-scaffolder-backend is the backend for the default Backstage software templates. Rated high severity (C

CVE-2026-106503 HIGH
8.1 Oct 06

Authenticated users of Backstage Scaffolder can bypass administrator-configured action restrictions in @backstage/plugin

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