# CVE-2026-82190: Weak cryptography in J2Store extension for Joomla

> Attackers with the Joomla secret can forge order tokens to access any order details and digital downloads without authorization.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Sep 2026
- **Updated:** 15 Sep 2026
- **Also known as:** GHSA-9p2w-4fq9-q3p2

## What is CVE-2026-82190?

CVE-2026-82190 is a medium-severity vulnerability in j2commerce.com J2Store extension for Joomla, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Joomla Extension - j2commerce.com - Predictable/forgeable order access token in J2Store 1.0.0-3.3.2, 4.0.0-4.0.22, 4.1.0-4.1.7 - Anyone who obtains the site's Joomla `secret` can compute a valid access token for *any* order on the site without ever having placed one, gaining guest access to that order's details and any purchased digital downloads. Because the token is never rotated, this exposure persists indefinitely even after the underlying secret-disclosure vector is patched, unless the Joomla secret itself is also rotated. The attack complexity (`AC:H`) is high because it depends on the secret already being known through a separate vector; it is not directly exploitable by an anonymous visitor with no other foothold.

Weakness: CWE-1241 (Use of Predictable Algorithm in Random Number Generator)

## Which versions are affected by CVE-2026-82190?


## How do I fix CVE-2026-82190?

No fix has been published for CVE-2026-82190 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-82190 being exploited?

There is no known exploitation of CVE-2026-82190 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-82190 and fix it if it is affected.

What it is: CVE-2026-82190 is a medium-severity vulnerability in j2commerce.com J2Store extension for Joomla, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-82190 in the wild and no public exploit code.

Affected product: j2commerce.com J2Store extension for Joomla. 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-2026-82190/ (Markdown: https://insights.sbomify.com/CVE-2026-82190/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-82190
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-82190
- OSV: https://osv.dev/vulnerability/CVE-2026-82190

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-82190/
Summaries are generated and may contain mistakes; the official description above is the record.