# CVE-2026-19678: Server-Side Request Forgery (SSRF) Leading to Internal Solr Data Disclosure

Status: published. Published: 2026-10-23. Updated: 2026-11-02.

A server-side request forgery (SSRF) vulnerability in the unauthenticated form service in version 11.0.14 in onPhase Forms allows an unauthenticated remote attacker to access sensitive internal Apache Solr data via an attacker-controlled URL supplied to a publicly accessible form.

## Remediation

- fix: *  Upgrade to 11.0.17
  *  The unauthenticated registration endpoint has been removed.
  *  Rules run in a sandbox that blocks access to unapproved Java classes.
  *  The Document Service endpoint (/service) is disabled by default (frevvo.documentServiceApi.enabled=false). Re-enabling it brings back the risk of server-side request forgery and is done at the customer's own risk.


  *  Customers who cannot upgrade immediately should block /frevvo/web/webapp/register and /frevvo/web/**/service at their reverse proxy or web application firewall. (source: CNA: MON-CSIRT)

## Affected products and versions

- onPhase / onPhase Forms: 11.0.14 (affected). Source: CNA: MON-CSIRT

## Severity and prioritization

- CVSS 4.0: 8.7 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: MON-CSIRT

- CISA KEV: No listing in collected sources

- EPSS: 0.39% as of 2026-11-01; percentile 32.68%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-918

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://frevvo-docs.atlassian.net/wiki/spaces/frevvo110/pages/1069273270/Detailed+Release+Notes (CNA: MON-CSIRT; release-notes)

- https://frevvo-docs.atlassian.net/wiki/spaces/frevvo110/overview?homepageId=1069252609 (CNA: MON-CSIRT; product)

## Provenance

- CNA: MON-CSIRT: https://www.cve.org/CVERecord?id=CVE-2026-19678; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-19678; retrieved 2026-11-02; source updated Not reported

Revision: cbc07f8199ea0da2fcf056a4406ba59af541855f7784fbc2cd1ddd96f8ca11e0

Canonical: https://y2.dev/cve/CVE-2026-19678