CVE-2026-106497: Backstage is an open framework for building developer portals

Q: How do I fix CVE-2026-106497?

backstage plugin-catalog-backend: upgrade to 3.9.1; backstage: upgrade to 1.54.6. Exact commands for each OS are on this page.

Q: Is CVE-2026-106497 being exploited?

CVE-2026-106497 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-106497 affect?

CVE-2026-106497 affects backstage plugin-catalog-backend, backstage. Severity is medium (CVSS 4.3). Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based ca

Q: How urgent is CVE-2026-106497?

Priority 22/100. On your watchlist

Routine

MEDIUM 4.3WATCHLISTUPGRADEUPGRADE

CVE-2026-106497 is a medium-severity flaw (CVSS 4.3) affecting backstage plugin-catalog-backend, backstage. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary, an authenticated user could receive catalog entity data that policy authors intended to restrict. This issue is fixed in version 3.9.1.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-178, CWE-863
Published	2026-10-06
Last modified	2026-10-16

Publisher (CNA): GitHub, Inc. · Vendor: linuxfoundation

Last updated 2026-10-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-06 22:17 UTCPublished CVE record published
2026-10-16 15:26 UTCUpdated Record last modified

linuxfoundation backstage plugin-catalog-backend UPGRADE

Affected: < 3.9.1

Fixed in: 3.9.1

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls backstage-plugin-catalog-backend

2. UPGRADE to 3.9.1

npm install backstage-plugin-catalog-backend@">=3.9.1"

linuxfoundation backstage UPGRADE

Affected: < 1.54.6

Fixed in: 1.54.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy backstage || rpm -q backstage || backstage --version

2. UPGRADE to 1.54.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade backstage

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade backstage

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-106497?

backstage plugin-catalog-backend: upgrade to 3.9.1; backstage: upgrade to 1.54.6. Exact commands for each OS are on this page.

Is CVE-2026-106497 being exploited?

CVE-2026-106497 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-106497 affect?

CVE-2026-106497 affects backstage plugin-catalog-backend, backstage. Severity is medium (CVSS 4.3). Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based ca

How urgent is CVE-2026-106497?

Priority 22/100. On your watchlist

Related CVEs

CVE-2026-106496 LOW 3.1 UPGRADE UPGRADE Backstage is an open framework for building developer portals
CVE-2026-106498 HIGH 7.7 UPGRADE UPGRADE Backstage is an open framework for building developer portals

References

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