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Vulnerabilities

Vulnerability · CVE-2026-24046

Backstage is an open framework for building developer portals.

Published Jan 21, 2026 · catalog updated Jul 15, 2026 · Backstage is an open

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-24046. EPSS is 0.53%. Act only if a listed version of Backstage is an open is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Backstage is an open).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.53%
Remediation
Version ranges on file
Affected products
vendor backstage backstage @backstage/backend-defaults 0.14.0, < 0.14.1

Backstage is an open framework for building developer portals. Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to read arbitrary files via the action by creating a symlink pointing to sensitive files (e.g., , configuration files, secrets); delete arbitrary files via the action by creating symlinks pointing outside the workspace, and write files outside the workspace via archive extraction (tar/zip) containing malicious symlinks. This af

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor backstage backstage @backstage/backend-defaults 0.14.0, < 0.14.1@backstage/backend-defaults 0.14.0, < 0.14.1

How to fix CVE-2026-24046

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-24046. EPSS is 0.53%. Act only if a listed version of Backstage is an open is installed.

Which versions are affected?

Compare what you have installed with backstage backstage @backstage/backend-defaults 0.14.0, < 0.14.1 @backstage/backend-defaults 0.14.0, < 0.14.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.53%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 21, 2026 · EUVD

    Detected

    Backstage is an open framework for building developer portals. Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to read arbitrary files via the action by creating a symlink pointing to sensitive files (e.g., , configuration files, secrets);

  2. Jul 15, 2026 · EUVD

    Updated

    Backstage is an open framework for building developer portals. Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to read arbitrary files via the action by creating a symlink pointing to sensitive files (e.g., , configuration files, secrets);

Sources

  • CVE.orgVulnerability recordCVE-2026-24046

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-24046

    30-day exploitation probability 0.53%

    first.org
  • EUVDVulnerability recordEUVD-2026-4137

    Backstage is an open framework for building developer portals. Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to read a

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 5, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 2, 2026