What is CVE-2026-29184?

CVE-2026-29184 is a low-severity vulnerability in Backstage, classified under Insertion of Sensitive Information into Log File. CVSS score: 2.0/10. Published 2026-03-07.

How severe is CVE-2026-29184?

Low severity. CVSS v3 base score is 2.0 out of 10.

Information disclosure in Backstage

CVE-2026-29184

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.

Published 2026-03-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 2.0 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Backstage — versions < 3.1.4
Linuxfoundation Backstage\/plugin-Scaffolder-Backend

Weakness classification (CWE)

CWE-532 — Insertion of Sensitive Information into Log File

References

github.com/backstage/backstage/security/advisories/GHSA-8qp7-fhr9-fw53 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-29184?: CVE-2026-29184 is a low-severity vulnerability in Backstage, classified under Insertion of Sensitive Information into Log File. CVSS score: 2.0/10. Published 2026-03-07.
How severe is CVE-2026-29184?: Low severity. CVSS v3 base score is 2.0 out of 10.