# CVE-2026-21282: Adobe Commerce | Improper Input Validation (CWE-20)

> An attacker can cause application denial-of-service in Adobe Commerce by providing specially crafted input without user interaction.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Mar 2026
- **Updated:** 27 Aug 2026
- **Also known as:** GHSA-93vq-4p5q-cvfx

## What is CVE-2026-21282?

CVE-2026-21282 is a medium-severity denial of service vulnerability in Adobe Commerce, published on 11 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Adobe Commerce versions 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16 and earlier are affected by an Improper Input Validation vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability by providing specially crafted input, causing limited impact to application availability. Exploitation of this issue does not require user interaction.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2026-21282?

It affects 3 products.


Products: Adobe Commerce, Adobe Commerce B2b, Adobe Magento.

## How do I fix CVE-2026-21282?

No fix has been published for CVE-2026-21282 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-21282 being exploited?

There is no known exploitation of CVE-2026-21282 in the wild and no public exploit code.

## Other vulnerabilities in Adobe Commerce

- [CVE-2026-75650](https://insights.sbomify.com/CVE-2026-75650/): Adobe Commerce and Magento Improper Neutralization of Special Elements Used in a Template Engine (critical 10.0, exploited in the wild)
- [CVE-2024-34102](https://insights.sbomify.com/CVE-2024-34102/): Adobe Commerce and Magento Open Source Improper Restriction of XML External Entity Reference (XXE) (critical 9.8, exploited in the wild)
- [CVE-2022-24086](https://insights.sbomify.com/CVE-2022-24086/): Adobe Commerce and Magento Open Source Improper Input Validation (critical 9.8, exploited in the wild)
- [CVE-2026-48356](https://insights.sbomify.com/CVE-2026-48356/): Adobe Commerce and Magento Unrestricted Upload of File with Dangerous Type (critical 9.3, exploited in the wild)
- [CVE-2026-71362](https://insights.sbomify.com/CVE-2026-71362/): Adobe Commerce and Magento Incorrect Authorization Vulnerability (critical 9.1, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-21282 and fix it if it is affected.

What it is: CVE-2026-21282 is a medium-severity denial of service vulnerability in Adobe Commerce, published on 11 Mar 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-2026-21282 in the wild and no public exploit code.

Affected product: Adobe Commerce. 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-2026-21282/ (Markdown: https://insights.sbomify.com/CVE-2026-21282/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-21282
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-21282
- OSV: https://osv.dev/vulnerability/CVE-2026-21282

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-21282/
Summaries are generated and may contain mistakes; the official description above is the record.