# CVE-2026-19895: opensourcepos Open Source Point of Sale Login Endpoint Filters.php index excessive authentication

> Attackers can bypass login rate limiting in Open Source Point of Sale, facilitating brute-force attacks against user accounts.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/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:** Not needed
- **Fix available:** No
- **Published:** 15 Aug 2026
- **Updated:** 17 Aug 2026
- **Also known as:** GHSA-qqrv-pprc-rj67

## What is CVE-2026-19895?

CVE-2026-19895 is a medium-severity vulnerability in opensourcepos Open Source Point of Sale, published on 15 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was detected in opensourcepos Open Source Point of Sale up to 3.4.2. This affects the function Login::index of the file app/Config/Filters.php of the component Login Endpoint. The manipulation results in improper restriction of excessive authentication attempts. The attack may be launched remotely. The attack requires a high level of complexity. It is indicated that the exploitability is difficult. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-799 (Improper Control of Interaction Frequency), CWE-307 (Improper Restriction of Excessive Authentication Attempts)

## Which versions are affected by CVE-2026-19895?


## How do I fix CVE-2026-19895?

No fix has been published for CVE-2026-19895 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-19895 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19895 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19895 and fix it if it is affected.

What it is: CVE-2026-19895 is a medium-severity vulnerability in opensourcepos Open Source Point of Sale, published on 15 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19895 exists.

Affected product: opensourcepos Open Source Point of Sale. 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-2026-19895/ (Markdown: https://insights.sbomify.com/CVE-2026-19895/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19895
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19895
- OSV: https://osv.dev/vulnerability/CVE-2026-19895

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-19895/
Summaries are generated and may contain mistakes; the official description above is the record.