Widely used Adobe Commerce; stored XSS could enable session takeover; impacts merchants and online storefronts.
CVE-2026-21361
Stored XSS in Adobe Commerce allows session takeover by privileged attacker.
Is CVE-2026-21361 being exploited?
Not confirmed. CVE-2026-21361 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.45% probability of exploitation in the next 30 days.
How severe is CVE-2026-21361?
CVE-2026-21361 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-21361?
Yes. A fix has been recorded for CVE-2026-21361. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-21361 affect?
CVE-2026-21361 affects Adobe Commerce (Magento) 2.4.x up to 2.4.9-alpha3 and earlier. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-21361?
Upgrade to patched release when available; rotate admin credentials; monitor for abuse
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Stored XSS via vulnerable fields could hijack sessions and alter data; requires user interaction.
Patch when possible
- affected<= 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16
- affected<= 1.5.3-alpha3, 1.5.2-p3, 1.4.2-p8, 1.3.5-p13, 1.3.4-p15, 1.3.3-p16
- affected<= 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.