PT-2026-50813 · Pgadmin.Org · Pgadmin 4
Publicado
2026-06-18
·
Atualizado
2026-06-19
·
CVE-2026-12047
CVSS v3.1
3.5
Baixa
| Vetor | AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N |
HTML injection in pgAdmin 4's cloud deployment module. The verify credentials, deploy, regions, and update-server endpoints under /rds/, /azure/, /google/, and the top-level /cloud/ blueprint propagated AWS / Azure / Google SDK exception text — and the related file-resolution and database-commit exception text — into the JSON response body (the info and errormsg fields) without HTML-encoding. The Cloud Wizard frontend rendered these strings through html-react-parser, so an attacker-influenced exception message embedded structural HTML directly into the wizard's DOM.
The reported entry point is /rds/verify credentials/. An authenticated pgAdmin user submits a crafted access key whose value contains an <iframe/src=...> payload; AWS STS rejects the credential with an IncompleteSignature exception whose text quotes the access key verbatim; the pgAdmin backend forwards that text into the JSON info field; the Cloud Wizard's FormFooterMessage parses it as HTML. The browser fetches the iframe's src from an attacker-controlled host, and JavaScript executing inside the cross-origin iframe writes to parent.location, redirecting the victim's pgAdmin tab. Because the injection renders inside pgAdmin's own interface, X-Frame-Options and Content-Security-Policy frame-ancestors do not mitigate it. Baseline impact is self-targeted (the same user who supplied the payload sees the injection); escalation against other authenticated users requires an additional cross-site request-forgery primitive capable of submitting the malformed credential request with a valid X-pgA-CSRFToken in the victim's browser context.
The same unsanitised-error-into-JSON pattern was present across multiple sibling endpoints — Azure's check cluster name availability, every Google endpoint that surfaces SDK errors (verification ack, projects, regions, instance types, database versions, the verify credentials path-resolution branches), the central /deploy endpoint that bubbles str(e) from deploy on rds / deploy on azure / deploy on google, and update cloud server which surfaces the str(e) from a failing db.session.commit — all of which are now covered.
Fix HTML-escapes every external/SDK exception string at the endpoint sink via a new shared sanitize external text helper (HTML escape with control-character strip), promoted out of the psycopg3 driver into web/pgadmin/utils/text sanitize.py. The Cloud Wizard frontend additionally renders its FormFooterMessage in plain-text mode for backend-derived strings, so the value is never parsed as HTML even if a future sink forgets the escape.
This issue affects pgAdmin 4: from 6.6 before 9.16.
Correção
XSS
Improper Encoding or Escaping of Output
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Identificadores relacionados
Produtos afetados
Pgadmin 4