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Back to active CVEs
Critical · CVSS 9.3CVE-2026-19677

Authentication Bypass Leading to Server-Side Command ExecutionCVE-2026-19677

Answer in brief

CVE-2026-19677 records a Critical severity (CVSS 9.3) vulnerability in Authentication Bypass Leading to Server-Side Command Execution. The current sources do not mark it as known exploited. The current feed maps onPhase/onPhase Forms (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 23, 2026Updated Oct 23, 2026Source checked Oct 23, 2026First seen by HOL Oct 23, 2026Material review Oct 23, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps onPhase/onPhase Forms (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
onPhase/onPhase Formsgeneric11.0.14Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for onPhase/onPhase Forms.
  2. 2Review the reported fix. Source-reported solution: * 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.

Evidence timeline and material changes

  1. Published upstream

    Oct 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 23, 2026

Sources and claim methodology

  • Source referencefrevvo-docs.atlassian.net
  • Source referencefrevvo-docs.atlassian.net
Upstream source description

An authentication bypass vulnerability in the public onPhase/ frevvo registration form version 11.0.14 allows an unauthenticated remote attacker to authenticate as an arbitrary tenant user, obtain TenantAdmin and Designer privileges, and execute arbitrary operating system commands via manipulation of registration parameters containing a valid tenant name and existing user identifier.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Server-Side Request Forgery (SSRF) Leading to Internal Solr Data DisclosureSame onphase/onphase forms package
  • Kiloview E3 NDI Encoder Missing Authentication for Critical FunctionAlso CWE-306

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-306
Source
CVE List V5
Source checked
Oct 23, 2026
References
2 linked sources
Open source record