Security readout for executives and security teams
Plain-English summary
A low-privileged Adobe Experience Manager user could save malicious script in a vulnerable form field. The script may run when another user views the affected page, potentially exposing browser-accessible information or enabling actions within that user’s session. Exploitation requires a victim to visit the page.
Executive priority
Schedule prompt remediation through normal vulnerability management, prioritizing internet-facing systems and environments with external or broadly delegated authors. This is not evidenced as an emergency exploitation event, but successful abuse could compromise trusted user sessions and content integrity.
Technical view
CVE-2026-27250 is stored cross-site scripting (CWE-79) with CVSS 3.1 score 5.4. It is network-reachable, low complexity, requires low privileges and user interaction, and can cross a security boundary. Impact is limited confidentiality and integrity loss, without documented availability impact.
Likely exposure
Exposure is most likely where affected AEM releases permit low-privileged or untrusted users to populate vulnerable form fields. Internet-facing authoring or publishing workflows may increase opportunity. The bundle identifies AEM 6.5.23 and earlier; other listed product boundaries should be confirmed against Adobe’s advisory.
Exploitation context
The supplied evidence does not establish active exploitation, and the CVE is not listed as KEV in the bundle. Abuse requires authenticated low-level access to store script content and a victim who later visits the affected page. No exploit maturity information is provided.
Researcher notes
The supplied version data is clearest for AEM 6.5: versions 6.5.23 and earlier are affected, with 6.5.24 presented as the boundary. Cloud Service 2026.2.0 and 6.5 LTS SP2 also appear as boundaries, but their range semantics are incomplete in the bundle; verify them with Adobe.
Mitigation direction
- Review Adobe advisory APSB26-24 and apply the corrected release appropriate to each AEM deployment.
- Upgrade AEM 6.5 installations running 6.5.23 or earlier to Adobe’s corrected version.
- Confirm Cloud Service and 6.5 LTS remediation boundaries directly against Adobe’s advisory.
- Restrict low-privileged content-authoring access until remediation is complete.
- Review potentially vulnerable stored form content for unexpected scripts or markup.
Validation and detection
- Inventory AEM product variants and exact deployed versions across authoring and publishing environments.
- Confirm no AEM 6.5 deployment remains on version 6.5.23 or earlier.
- Verify installed release status against Adobe APSB26-24 for Cloud Service and 6.5 LTS.
- Review audit records for suspicious low-privileged edits to form fields or affected pages.
- Use approved defensive testing to confirm stored form content is safely encoded after remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-27250 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7adobeVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/experience-manager/apsb26-24.htmlCVE reference, adobe · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.