GitHub Advisoryadvisory · npm

GHSA-w7fj-336r-vw49 Cross-Site Scripting vulnerability in @backstage/plugin-auth-backend

HIGH Published 2021-12-01 Modified 2021-12-01 Official page ↗
Aliases
CVE-2021-43776
Ecosystem
npm
Packages
@backstage/plugin-auth-backend
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Weaknesses
CWE-79
Reviewed
2021-11-29

Affected packages

• npm @backstage/plugin-auth-backend: < 0.4.9 → fixed in 0.4.9

Description

Impact This vulnerability allows a malicious actor to trick another user into visiting a vulnerable URL that executes an XSS attack. This attack can potentially allow the attacker to exfiltrate access tokens or other secrets from the user's browser. The default CSP does prevent this attack, but it is expected that some deployments have these policies disabled due to incompatibilities. Patches This is vulnerability is patched in version `0.4.9` of `@backstage/plugin-auth-backend`. For more information If you have any questions or comments about this advisory: • Open an issue in the Backstage repository • Visit our chat, linked to in Backstage README

Related

Alias · CVE (1)

  • CVE-2021-43776 Backstage is an open platform for building developer portals. vulnerability

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References