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TI-2026-79495 Aliases CVE-2026-19677GHSA-542f-hr4v-mv7f

Authentication bypass in onPhase Forms allows OS command execution

Priority MEDIUM 49CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

onPhase Forms from 11.0.14 is affected by an authentication bypass in the public frevvo registration form (CWE-306). Manipulating registration parameters that contain a valid tenant name and an existing user identifier lets a request authenticate as that tenant user. An unauthenticated remote attacker can gain TenantAdmin and Designer privileges and execute arbitrary operating system commands on the server.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00533 45th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
onPhaseonPhase Forms11.0.14—No fix listedCNA
  • onPhase Forms VendoronPhase Affected 11.0.14 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for onPhase Forms.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Timeline

  1. 2026-10-23 Threatist record created from CVE-2026-19677
  2. 2026-10-23 Alias added: GHSA-542f-hr4v-mv7f
  3. 2026-11-02 CISA SSVC decision points changed

References

Other 2

  • TI-2026-79496 Server-side request forgery in onPhase Forms leaks internal Solr data CVSS 4.0HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences