Technology · Backstage
Backstage Plugin-Auth-Backend vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 5 vulnerabilities in Backstage Plugin-Auth-Backend: 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-73563, was published on 24 July 2026.
- Last 7 days
- 0
- Last 90 days
- 2
- Critical, all time
- 0
- Exploited in the wild
- 0
About Backstage Plugin-Auth-Backend
A software library for implementing authentication backends within the Backstage developer portal framework.
Latest Backstage Plugin-Auth-Backend vulnerabilities
- CVE-2026-73563: Backstage plugin-auth-backend OAuth redirect_uri allowlist bypasslowCVSS 3.1EPSS 0.3%
- Backstage @backstage/plugin-auth-backend OAuth allowlist bypassmediumCVSS 4.7
- CVE-2026-32236: Backstage auth-backend SSRF in CIMD metadata fetchmediumCVSS 4EPSS 0.5%
- CVE-2026-32235: Backstage Auth Backend OAuth redirect URI allowlist bypasslowCVSS 3.1EPSS 0.2%
- CVE-2021-43776: Backstage plugin-auth-backend reflected cross-site scriptinglowCVSS 3.1EPSS 0.7%
Most severe Backstage Plugin-Auth-Backend vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- Backstage @backstage/plugin-auth-backend OAuth allowlist bypassmediumCVSS 4.7
- CVE-2026-32236: Backstage auth-backend SSRF in CIMD metadata fetchmediumCVSS 4EPSS 0.5%
- CVE-2021-43776: Backstage plugin-auth-backend reflected cross-site scriptinglowCVSS 3.1EPSS 0.7%
- CVE-2026-73563: Backstage plugin-auth-backend OAuth redirect_uri allowlist bypasslowCVSS 3.1EPSS 0.3%
- CVE-2026-32235: Backstage Auth Backend OAuth redirect URI allowlist bypasslowCVSS 3.1EPSS 0.2%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 2 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/plugin-auth-backend.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Backstage Plugin-Auth-Backend vulnerabilities", https://junglewise.ai/threats/technologies/plugin-auth-backend, 26 September 2026.