# CVE-2026-2971: a466350665 Smart-SSO Login login.html cross site scripting

> Remote attackers can execute arbitrary scripts via the redirectUri parameter in the Smart-SSO login page, potentially compromising user sessions.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **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:** 23 Feb 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-333w-78wm-wpxh

## What is CVE-2026-2971?

CVE-2026-2971 is a medium-severity cross-site scripting vulnerability in a466350665 Smart-SSO, published on 23 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

A vulnerability was found in a466350665 Smart-SSO up to 2.1.1. Affected by this issue is some unknown functionality of the file smart-sso-server/src/main/resources/templates/login.html of the component Login. Performing a manipulation of the argument redirectUri results in cross site scripting. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-2971?

It affects 1 product.


Products: A466350665 Smart-Sso.

## How do I fix CVE-2026-2971?

No fix has been published for CVE-2026-2971 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-2971 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2971 exists.

## Other vulnerabilities in a466350665 Smart-SSO

- [CVE-2026-2972](https://insights.sbomify.com/CVE-2026-2972/): a466350665 Smart-SSO Role Edit UserController.java save cross site scripting (medium 4.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-2971 and fix it if it is affected.

What it is: CVE-2026-2971 is a medium-severity cross-site scripting vulnerability in a466350665 Smart-SSO, published on 23 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2971 exists.

Affected product: a466350665 Smart-SSO. 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-2026-2971/ (Markdown: https://insights.sbomify.com/CVE-2026-2971/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-2971
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-2971
- OSV: https://osv.dev/vulnerability/CVE-2026-2971

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-2971/
Summaries are generated and may contain mistakes; the official description above is the record.