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Fencer Vulns
medium 6.5

CVE-2024-46976 json

Circumvention of cross site scripting Protection in @backstage/plugin-techdocs-backend

published 2024-09-17 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-2722 , GHSA-5j94-f3mf-8685

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

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.

Patch / fix

  • npm @backstage/plugin-techdocs-backend 1.10.13
  • linuxfoundation @backstage/plugin-techdocs-backend 1.10.13
  • linuxfoundation backstage_plugin-techdocs-backend 1.10.13

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-46976 updated cvss 5.4

plugin-techdocs-backend: circumvention of XSS protection in TechDocs

  • Red Hat Developer Hub (RHDH) 1.4 rhdh 1.4-1734106454
    fixed: vendor fix RHBA-2024:11265
  • Red Hat Developer Hub (RHDH) 1.4 rhdh 1.4-1734106469, rhdh 1.4-1734113472 Red Hat Developer Hub 1 rhdh-operator-container
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
npm @backstage/plugin-techdocs-backend
<1.10.13
1.10.13

Affected products

  • backstage backstage

Classification

Weakness
  • CWE-693 Protection Mechanism Failure
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.