CVE-2026-106496: Backstage is an open framework for building developer portals

Q: How do I fix CVE-2026-106496?

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-2026-106496 being exploited?

CVE-2026-106496 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-2026-106496 affect?

CVE-2026-106496 affects backstage plugin-catalog-backend, backstage. Severity is low (CVSS 3.1). Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent enforcement of allowed location types during catalog processing. Under certain configur

Q: How urgent is CVE-2026-106496?

Priority 20/100. On your watchlist

Routine

LOW 3.1WATCHLISTUPGRADEUPGRADE

CVE-2026-106496 is a low-severity flaw (CVSS 3.1) 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 enforcement of allowed location types during catalog processing. Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host. 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	3.1 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-22, 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 15:33 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-2026-106496?

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-2026-106496 being exploited?

CVE-2026-106496 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-2026-106496 affect?

CVE-2026-106496 affects backstage plugin-catalog-backend, backstage. Severity is low (CVSS 3.1). Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent enforcement of allowed location types during catalog processing. Under certain configur

How urgent is CVE-2026-106496?

Priority 20/100. On your watchlist

Related CVEs

CVE-2026-106497 MEDIUM 4.3 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

← Back to latest CVEs