What is CVE-2024-46976?

CVE-2024-46976 is a medium-severity vulnerability in Backstage, classified under Protection Mechanism Failure. CVSS score: 6.5/10. Published 2024-09-17.

How severe is CVE-2024-46976?

Medium severity. CVSS v3 base score is 6.5 out of 10.

XSS in Backstage

CVE-2024-46976

Backstage is an open framework for building developer portals. An attacker with control of the contents of the TechDocs storage buckets is able to inject executable scripts in the TechDocs content that will be executed in the victim's browser when browsing documentation or navigating to an attacker provided link. This has been fixed in the 1.10.13 release of the `@backstage/plugin-techdocs-backend` package. users are advised to upgrade. There are no known workarounds for this vulnerability.

Published 2024-09-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.003 (19.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.1% 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 < 1.10.13
Linuxfoundation Backstage

Weakness classification (CWE)

References

github.com/backstage/backstage/security/advisories/GHSA-5j94-f3mf-8685 (Third Party Advisory)

Frequently asked questions

What is CVE-2024-46976?: CVE-2024-46976 is a medium-severity vulnerability in Backstage, classified under Protection Mechanism Failure. CVSS score: 6.5/10. Published 2024-09-17.
How severe is CVE-2024-46976?: Medium severity. CVSS v3 base score is 6.5 out of 10.