# CVE-2026-57273: GeoVision GeoWebPlayer Websocket Server connectInfo handler stack-based buffer overflow vulnerability

> A stack-based buffer overflow in the GeoWebPlayer websocket server allows remote code execution via crafted JSON input in the connectionInfo handler.

- **Severity:** High 8.3 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H`)
- **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:** 2 Jul 2026
- **Updated:** 2 Jul 2026
- **Also known as:** GHSA-qq94-fr6f-gvjv

## What is CVE-2026-57273?

CVE-2026-57273 is a high-severity memory corruption vulnerability in GeoVision Inc. GeoWebPlayer, published on 2 Jul 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

GeoWebPlayer (also called "Web Plugin" in the GV-VMS documentation and "WS Player" for VMS-Cloud) is an addon that can be installed with various GeoVision software (GV-VMS, GV-Cloud, ...). It creates a websocket server that expands the capabilities of the various web-interfaces provided by the GeoVision software and may be necessary for them to function properly.

The Websocket server can accept various commands coming from localhost. One of them, `connectionInfo` is meant to provide the necessary details to connect to a camera. The handler associated with this command that we call`handle_connection_info` contains multiple instances of string copy that can overflow. The function `handle_connect_info` copies attacker-controlled JSON strings into fixed-size buffers using manual byte-by-byte loops that do not enforce length limits.

#### Buffer Overflow in username field (no key present)

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2026-57273?


## How do I fix CVE-2026-57273?

No fix has been published for CVE-2026-57273 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-57273 being exploited?

There is no known exploitation of CVE-2026-57273 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-57273 and fix it if it is affected.

What it is: CVE-2026-57273 is a high-severity memory corruption vulnerability in GeoVision Inc. GeoWebPlayer, published on 2 Jul 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-2026-57273 in the wild and no public exploit code.

Affected product: GeoVision Inc. GeoWebPlayer. 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-2026-57273/ (Markdown: https://insights.sbomify.com/CVE-2026-57273/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-57273
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-57273
- OSV: https://osv.dev/vulnerability/CVE-2026-57273

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-57273/
Summaries are generated and may contain mistakes; the official description above is the record.