CVE-2026-100133: Cross-Site Scripting Flaw in Adobe Commerce Scores 9.3 on CVSS
A newly published critical vulnerability in Adobe Commerce carries a CVSS score of 9.3. Here is what is affected and how to respond.
Key points
- CVE-2026-100133 affects Adobe Commerce.
- CVSS 9.3 (Critical).
- No exploitation confirmed yet.
A critical cross-site scripting tracked as CVE-2026-100133 has been published in the National Vulnerability Database for Adobe Commerce, with a CVSS base score of 9.3.
At a glance
- CVE
- CVE-2026-100133
- Product
- Adobe Commerce
- CVSS
- 9.3 Critical
- Weakness
- cross-site scripting
- Exploited
- No known exploitation
What is the vulnerability?
The NVD entry states: Adobe Commerce is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by an attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browser when they browse to the page containing the vulnerable field, potentially gaining elevated access or control over the victim's account or session. Scope is changed.
Affected versions
| Vendor | Product | Versions |
|---|---|---|
| Adobe | Adobe Commerce | up to 2.4.9-2026-sep, 2.4.8-2026-sep, 2.4.7-2026-sep, 2.4.6-2026-sep, 2.4.5-2026-sep, 2.4.4-2026-sep |
| Adobe | Adobe Commerce B2B | up to 1.5.3-2026-sep, 1.5.2-2026-sep, 1.4.2-2026-sep, 1.3.4-2026-sep, 1.3.3-2026-sep |
| Adobe | Magento Open Source | up to 2.4.9-2026-sep, 2.4.8-2026-sep, 2.4.7-2026-sep |
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.
Is it being exploited?
There is no public confirmation of exploitation at the time of publication. It does not appear in CISA's Known Exploited Vulnerabilities catalog. We will update this report if that changes.
What should you do?
- Identify whether the affected product and versions run in your environment.
- Apply the vendor update listed in the advisory as soon as it is available.
- Limit network exposure of the affected service until it is patched.
- Monitor the vendor advisory for updated guidance or exploitation reports.
What to do and how to stay safe: CVE-2026-100133
- Vulnerability severity scores ignore your specific architecture and context.
- Exploitability depends on network exposure and user behavior, not just code flaws.
- Prioritization requires continuous asset inventory and threat intelligence alignment.
Risk-based vulnerability management focuses your limited resources on the flaws that actually threaten your business. Start by mapping your critical assets and checking for active exploits to prioritize your backlog.
Step-by-step guide: Risk-Based Vulnerability Management: Prioritize Fixes by Actual Danger
General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is CVE-2026-100133?
CVE-2026-100133 is a cross-site scripting vulnerability in Adobe Commerce.
How severe is CVE-2026-100133?
It has a CVSS score of 9.3 Critical.
Is CVE-2026-100133 being exploited?
There is no public confirmation of exploitation at the time of publication.
