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

CVE record · `CVE-2026-90531`

- **Identifiers:** `CVE-2026-90531`
- **State:** Confirmed
- **Severity:** CVSS 9.6 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** adobe
- **Weakness (CWE):** [CWE-611](https://cwe.mitre.org/data/definitions/611.html)
- **Tags:** [XML external entities (XXE)](https://agentprime.io/advisories/tag/xxe.md)
- **Technologies:** [Adobe Experience Manager as a Cloud Service](https://agentprime.io/advisories/technology/adobe-experience-manager-as-a-cloud-service.md) · [Adobe Experience Manager 6.5 LTS](https://agentprime.io/advisories/technology/adobe-experience-manager-6-5-lts.md) · [Adobe Experience Manager 6.5](https://agentprime.io/advisories/technology/adobe-experience-manager-6-5.md)
- **Published:** 13 Oct 2026
- **Updated:** 14 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: adobe) at 13 Oct 2026, 19:39 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Critical

Critical, because:

- CVSS score 9.6: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Adobe. Product: Adobe Experience Manager as a Cloud Service.
  - affected: `2026.9.28187 and earlier` (custom)
  - unaffected: `2026.9.28386` (custom)
  - Other versions: unaffected
- Vendor: Adobe. Product: Adobe Experience Manager 6.5 LTS.
  - affected: `6.5 LTS SP3 and earlier` (custom)
  - unaffected: `6.5 LTS SP1 - Hotfix for GRANITE-71772, 6.5 LTS SP2 - Hotfix for GRANITE-71772, 6.5 LTS SP3 - Hotfix for GRANITE-71772` (custom)
  - Other versions: unaffected
- Vendor: Adobe. Product: Adobe Experience Manager 6.5.
  - affected: `6.5.25 and earlier` (custom)
  - unaffected: `6.5.22 - Hotfix for GRANITE-71772, 6.5.23 - Hotfix for GRANITE-71772, 6.5.24 - Hotfix for GRANITE-71772, 6.5.25 - Hotfix for GRANITE-71772` (custom)
  - Other versions: unaffected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 9.6 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N`, from CNA (adobe)

- **CISA KEV:** Not listed.
- **EPSS:** 0.014, the 72nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 13 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90531](https://www.cve.org/CVERecord?id=CVE-2026-90531)
- [NVD: CVE-2026-90531](https://nvd.nist.gov/vuln/detail/CVE-2026-90531)

### References from the CNA

- <https://helpx.adobe.com/security/products/experience-manager/apsb26-152.html> (vendor-advisory)

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-90531>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-90531/>. Everything for agents: <https://agentprime.io/llms.txt>.