Adobe Commerce | Cross-site Scripting (Stored XSS) (CWE-79) (CVE-2026-21291) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-21291

Adobe Commerce | Cross-site Scripting (Stored XSS) (CWE-79)

Answer in brief

CVE-2026-21291 records a Unknown severity vulnerability in Adobe Commerce | Cross-site Scripting (Stored XSS) (CWE-79). The current sources do not mark it as known exploited. The current feed maps Adobe/Adobe Commerce (generic), Adobe/Adobe Commerce B2B (generic), Adobe/Magento Open Source (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Mar 11, 2026Updated Aug 27, 2026Source checked Aug 27, 2026First seen by HOL Aug 27, 2026Material review Aug 27, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Adobe/Adobe Commerce (generic), Adobe/Adobe Commerce B2B (generic), Adobe/Magento Open Source (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Adobe/Adobe Commercegeneric	0	Not reported
Adobe/Adobe Commerce B2Bgeneric	0	Not reported
Adobe/Magento Open Sourcegeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Adobe/Adobe Commerce, Adobe/Adobe Commerce B2B, Adobe/Magento Open Source.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Mar 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 27, 2026

Sources and claim methodology

Source referencehelpx.adobe.com

Upstream source 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 a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a high-privileged attacker to inject malicious scripts into vulnerable form fields. Exploitation of this issue requires user interaction in that a victim must browse to the page containing the vulnerable field.

Quoted source text, attributed separately from HOL analysis.