6.5

CVE-2026-29184: backstage

CVSS: 6.5v3.1MediumAnalyzed
AliasesGHSA-8qp7-fhr9-fw53
Published 07-03-2026Last modified 09-03-2026
Open JSON

Vulnerability summary

CVE-2026-29184 is a medium (CVSS 6.5) vulnerability in backstage. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.1% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.30%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-03-2026
    PublishedVulnerability first disclosed.
  2. 09-03-2026
    Last modifiedVulnerability information updated.

Description

Backstage is an open framework for building developer portals. Prior to version 3.1.4, a malicious scaffolder template can bypass the log redaction mechanism to exfiltrate secrets provided run through task event logs. This issue has been patched in version 3.1.4.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

+0.04 pp

From 0.26% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

@backstage1 product
  • plugin-scaffolder-backend< 3.1.4
Backstage1 product
Linuxfoundation1 product

3 vendors · 3 products

References

5 links