CVE-2021-32661

mediumPriorität · verfolgen · 29EPSS 0.012 · 68. PerzentilEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.21% (68th) EPSS
CVSS 4.9 · medium
Is it mine?
3 products
Prüfe deine Angriffsfläche
Who says so?
4 sources
cnnvd · enisa_euvd · nvd · osv

EPSS · bewertet 2026-10-27

Backstage is an open platform for building developer portals. In versions of Backstage's Techdocs Plugin (`@backstage/plugin-techdocs`) prior to 0.9.5, a malicious internal actor can potentially upload documentation content with malicious scripts by embedding the script within an `object` element. This may give access to sensitive data when other users visit that same documentation page. The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store. The vulnerability is patched in the `0.9.5` release of `@backstage/plugin-techdocs`.

01

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.3
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 4.9–7.3

v2.04.9mediumAV:N/AC:M/Au:S/C:P/I:P/A:Nprimary · NVD / NIST USAusnutzbarkeit 6.8 · Auswirkung 4.9
v3.17.3highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Nprimary · NVD / NIST USAusnutzbarkeit 2.1 · Auswirkung 5.2
v3.16.8mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU
v3.16.8mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:Hsecondary · security-advisories@github.comAusnutzbarkeit 0.9 · Auswirkung 5.9
v3.16.8mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:Hsecondary · OSV
v3.16.7mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
02

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-434USprimärCWE-434USCWE-77USCWE-77US
03

betroffene Produkte (3)

Betroffene Produkte und Versionsbereiche.

04

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

  • GHSA-gg96-f8wr-p89fScript injection2021-06-04ghsa · osvUS

    ### Impact A malicious internal actor can potentially upload documentation content with malicious scripts by embedding the script within an `object` element. This may give access to sensitive data when other users visit that same documentation page. The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store. ### Patches The vulnerability is patched in the `0.9.5` release of `@backstage/plugin-techdocs`. ### For more information If you have any questions or comments about this advisory: * Open an issue in the [Backstage repository](https://github.com/backstage/backstage) * Visit our chat, linked to in [Backstage README](https://github.com/backstage/backstage)

05

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

06

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdnvdosvNVDCVE.orgMITRE
veröffentlicht 2021-06-03geändert 2026-06-17
08

Referenzen (10)

Externe Belege — Patches, Meldungen, Analysen.

scry

Angreifer nutzen Schwachstellen wie diese gegen im Internet exponierte Dienste aus. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.

Kostenloser Scan