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CVE-2026-29184

@backstage/plugin-scaffolder-backend: Potential Session Token Exfiltration via Log Redaction Bypass

No known exploitation. EPSS puts it in the 21st percentile. Fixed in 3.1.4.

CVSS 3.12.0LowEPSS percentile21st0.3% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix3.1.4Upgrade to this build

Published Updated Sources: CVE.org, NVD, GitHub

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • BackstageAffected: < 3.1.4Upgrade to: not statedStated by: CVE record
  • Npm @backstage/plugin-scaffolder-backendAffected: < 3.1.4Upgrade to: 3.1.4Stated by: GitHub advisory
  • Linuxfoundation Backstage\/plugin-scaffolder-backendAffected: < 3.1.4Upgrade to: 3.1.4Stated by: NVD

Versions as the sources state them. Full version matrix after sign-in

What it is

From the CVE record

@backstage/plugin-scaffolder-backend Vulnerable to Potential Session Token Exfiltration via Log Redaction Bypass

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS21st
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.3% chance of exploitation activity in the next 30 days, which ranks it in the 21st percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

5 events over 49 days, from the signal feeds we watch.

  1. Patch availablerecord updated
  2. Publishedweakness classified, att&ck mapped

Affected products

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N

Scored 2.0 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
  • Privileges Required HighRequires admin or elevated privileges
  • User Interaction RequiredA user must click a link, open a file, or perform some action

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality LowSome restricted information is disclosed, but limited in scope
  • Integrity NoneNo integrity impact
  • Availability NoneNo availability impact

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 2 more references. See all after sign-in

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