CVE-2026-90531: Adobe Experience Manager | Improper Restriction of XML External Entity Reference ('XXE') (CWE-611)

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of 29 Oct 2026. If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?

1.4%

Up from 0.5% on 22 Oct 2026.

EPSS score, percentile 72.4 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?

9.6 Critical

CVSS v3.1 base score, given by the CNA

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

Advisories and patches (1)

Which versions are affected?

Affected

• 2026.9.28187 and earlier
• 6.5 LTS SP3 and earlier
• 6.5.25 and earlier

Unaffected 2026.9.28386; 6.5 LTS SP1 - Hotfix for GRANITE-71772, 6.5 LTS SP2 - Hotfix for GRANITE-71772,…; 6.5.22 - Hotfix for GRANITE-71772, 6.5.23 - Hotfix for GRANITE-71772, 6.5.24 -…

Versions by product

Source: CISA KEV 2026.10.29, as of 29 Oct 2026; FIRST EPSS, as of 29 Oct 2026; CVE List, as of 29 Oct 2026. About the data.

What to do

Advisories and patches

• helpx.adobe.com (Vendor advisory)

This summary is based on the CVE record as of 29 Oct 2026. Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

As listed in the CVE record.

Versions not listed are: unaffected.

Versions not listed are: unaffected.

Versions not listed are: unaffected.

Versions the record lists as unaffected: 2026.9.28386, 6.5 LTS SP1 - Hotfix for GRANITE-71772, 6.5 LTS SP2 - Hotfix for GRANITE-71772,…, 6.5.22 - Hotfix for GRANITE-71772, 6.5.23 - Hotfix for GRANITE-71772, 6.5.24 -….

Source: CVE List, as of 29 Oct 2026. About the data.

About this vulnerability

Adobe Experience Manager is affected by an Improper Restriction of XML External Entity Reference ('XXE') vulnerability that could result in privilege escalation. A low-privileged attacker could exploit this vulnerability to gain elevated access to internal resources. Exploitation of this issue does not require user interaction. Scope is changed.

Summary: CVE record, as of 29 Oct 2026.

• CISA has not added CVE-2026-90531 to its Known Exploited Vulnerabilities (KEV) catalog, as of 29 Oct 2026.
• The CVE record was published on 13 Oct 2026.
• The CVE record carries a CVSS v3.1 base score of 9.6 (Critical), given by its CNA.
• FIRST's EPSS model puts the probability of exploitation in the next 30 days at 1.4% (percentile 72.4), as of 29 Oct 2026. EPSS is a statistical estimate, not a report of exploitation.
• CISA's SSVC assessment in the CVE record: exploitation none, automatable no, technical impact total.

Source: CISA KEV 2026.10.29, as of 29 Oct 2026; CVE List, as of 29 Oct 2026; FIRST EPSS, as of 29 Oct 2026. About the data.

Description

Adobe Experience Manager | Improper Restriction of XML External Entity Reference ('XXE') (CWE-611)

Adobe Experience Manager is affected by an Improper Restriction of XML External Entity Reference ('XXE') vulnerability that could result in privilege escalation. A low-privileged attacker could exploit this vulnerability to gain elevated access to internal resources. Exploitation of this issue does not require user interaction. Scope is changed.

Source: CVE List, as of 29 Oct 2026. About the data.

Timeline

Known exploited Adobe vulnerabilities

• CVE-2026-48356: Adobe Commerce and Magento Unrestricted Upload of File with Dangerous Type Vulnerability (added 27 Oct 2026)
• CVE-2026-71362: Adobe Commerce and Magento Incorrect Authorization Vulnerability (added 24 Sep 2026)
• CVE-2026-75650: Adobe Commerce and Magento Improper Neutralization of Special Elements Used in a Template Engine Vulnerability (added 8 Sep 2026)
• CVE-2026-48282: Adobe ColdFusion Path Traversal Vulnerability (added 7 Jul 2026)
• CVE-2009-3459: Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability (added 20 May 2026)