# CVE-2026-5812: SourceCodester Pharmacy Product Management System POST Parameter add-sales.php logic error

> Attackers can manipulate sales quantity parameters to cause business logic errors in the Pharmacy Product Management System.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Apr 2026
- **Updated:** 9 Apr 2026
- **Also known as:** GHSA-rxwr-mqgv-rc55

## What is CVE-2026-5812?

CVE-2026-5812 is a medium-severity vulnerability in SourceCodester Pharmacy Product Management System, published on 8 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A security flaw has been discovered in SourceCodester Pharmacy Product Management System 1.0. This affects an unknown part of the file add-sales.php of the component POST Parameter Handler. Performing a manipulation of the argument txtqty results in business logic errors. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

Weakness: CWE-840

## Which versions are affected by CVE-2026-5812?


## How do I fix CVE-2026-5812?

No fix has been published for CVE-2026-5812 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5812 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5812 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5812 and fix it if it is affected.

What it is: CVE-2026-5812 is a medium-severity vulnerability in SourceCodester Pharmacy Product Management System, published on 8 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5812 exists.

Affected product: SourceCodester Pharmacy Product Management System. 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-2026-5812/ (Markdown: https://insights.sbomify.com/CVE-2026-5812/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5812
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5812
- OSV: https://osv.dev/vulnerability/CVE-2026-5812

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5812/
Summaries are generated and may contain mistakes; the official description above is the record.