Security readout for executives and security teams
Plain-English summary
A low-privileged Adobe Experience Manager user could store malicious JavaScript in a vulnerable form field. The script may run when another person views the affected page, potentially exposing browser-accessible information or enabling unauthorized actions in that user’s session. A victim must visit the page, and no service outage impact is identified.
Executive priority
Schedule remediation through the normal vulnerability-management cycle, accelerating for public-facing sites or environments where many low-privileged contributors can publish content viewed by privileged users. The medium severity and interaction requirement reduce urgency, but stored scripts can persist and repeatedly affect viewers.
Technical view
CVE-2026-27248 is stored cross-site scripting (CWE-79) with CVSS 3.1 score 5.4. Exploitation is network-accessible, low complexity, requires low privileges and user interaction, and crosses a security boundary. Expected impact is limited confidentiality and integrity loss without availability impact.
Likely exposure
Exposure is most relevant where untrusted or low-privileged users can populate form fields later viewed by authors, administrators, or visitors. The bundle identifies AEM Cloud Service, 6.5 LTS, and 6.5 release lines, but its abbreviated version ranges should be confirmed against Adobe’s advisory.
Exploitation context
The vulnerability requires an authenticated low-privileged attacker to save malicious content and a victim to view the affected page. The supplied record is not in CISA KEV, and the bundle provides no evidence of active exploitation. That absence does not prove exploitation has never occurred.
Researcher notes
The supplied CVSS vector is AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. Version data appears abbreviated: the description explicitly names 6.5.23 and earlier, while structured entries also reference Cloud Service 2026.2.0 and 6.5 LTS SP2. Consult Adobe’s advisory before making exact range determinations.
Mitigation direction
- Review Adobe advisory APSB26-24 for the applicable fixed release and installation instructions.
- Upgrade affected AEM deployments according to Adobe’s supported update path.
- Restrict form-field editing to trusted users until remediation is complete.
- Review stored form content and remove suspicious script-bearing entries.
Validation and detection
- Inventory AEM deployment type and exact installed version.
- Compare each version with Adobe advisory APSB26-24 affected and fixed ranges.
- Identify roles permitted to create or modify relevant form fields.
- Review content and security logs for suspicious field modifications.
- Confirm remediation in a non-production environment before broad rollout.
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-2026-27248 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.