# CVE-2026-1695: XSS vulnerability upon unsuccessful authentication

> Remote attackers can execute scripts via XSS on OAuth error pages, potentially compromising user sessions in PcVue SCADA systems.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N/AU:Y/R:U/RE:M/U:Clear`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 26 Feb 2026
- **Updated:** 26 Mar 2026
- **Also known as:** GHSA-7693-hmcm-7whx

## What is CVE-2026-1695?

CVE-2026-1695 is a medium-severity cross-site scripting vulnerability in arcinfo PcVue, published on 26 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An XSS vulnerability affects the OAuth web services used by the WebVue, WebScheduler, TouchVue and SnapVue features of PcVue in version 12.0.0 through 16.3.3 included. It might allow a remote attacker to trick a legitimate user into loading content from another site upon unsuccessful user authentication on an unknown application (unknown client_id).

This vulnerability only affects the error page of the OAuth server.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-1695?

It affects 1 product.


Products: Arcinfo Pcvue.

## How do I fix CVE-2026-1695?

No fix has been published for CVE-2026-1695 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1695 being exploited?

There is no known exploitation of CVE-2026-1695 in the wild and no public exploit code.

## Other vulnerabilities in arcinfo PcVue

- [CVE-2020-26867](https://insights.sbomify.com/CVE-2020-26867/): ARC Informatique PcVue Deserialization of Untrusted Data (critical 9.8)
- [CVE-2026-14868](https://insights.sbomify.com/CVE-2026-14868/): Weak encryption mechanism for User directory (high 8.4)
- [CVE-2020-26868](https://insights.sbomify.com/CVE-2020-26868/): ARC Informatique PcVue Access to Critical Private Variable via Public Method (high 7.5)
- [CVE-2020-26869](https://insights.sbomify.com/CVE-2020-26869/): ARC Informatique PcVue Exposure of Sensitive Information to an Unauthorized Actor (high 7.5)
- [CVE-2026-14867](https://insights.sbomify.com/CVE-2026-14867/): Insecure password storage in User directory (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1695 and fix it if it is affected.

What it is: CVE-2026-1695 is a medium-severity cross-site scripting vulnerability in arcinfo PcVue, published on 26 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-1695 in the wild and no public exploit code.

Affected product: arcinfo PcVue. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-1695/ (Markdown: https://insights.sbomify.com/CVE-2026-1695/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1695
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1695
- OSV: https://osv.dev/vulnerability/CVE-2026-1695

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-1695/
Summaries are generated and may contain mistakes; the official description above is the record.