Security readout for executives and security teams
Plain-English summary
A logged-in attacker could save malicious JavaScript in a vulnerable Adobe Experience Manager form field. The script may run when another user views the affected page, potentially exposing limited browser-accessible information or enabling unauthorized actions in that user’s session. Victim interaction is required.
Executive priority
Schedule prompt remediation through normal vulnerability-management processes, prioritizing public-facing sites and broadly assigned authoring accounts. This is not presented as an emergency because exploitation requires credentials and user interaction, no availability impact is identified, and active exploitation is unsupported.
Technical view
CVE-2026-27262 is a stored cross-site scripting vulnerability classified as CWE-79. It is remotely reachable, requires low privileges and victim interaction, and crosses a security boundary. CVSS 3.1 is 5.4: AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. Availability impact is not identified.
Likely exposure
Prioritize AEM 6.5.23 and earlier where authenticated users can submit content through vulnerable form fields. The supplied range data also references corrected boundaries of AEM as a Cloud Service 2026.2.0, AEM 6.5 LTS SP2, and AEM 6.5 version 6.5.24; confirm branch-specific applicability with Adobe.
Exploitation context
The attacker needs low-level privileges to store content, and a victim must visit the page containing it. The bundle reports no CISA KEV listing and provides no evidence of active exploitation or public weaponization.
Researcher notes
The scope description explicitly names AEM 6.5.23 and earlier, while the structured range data also covers Cloud Service and 6.5 LTS branches. Validate exact range semantics against Adobe APSB26-24. Testing should focus on stored input reaching browser-rendered contexts and whether contextual output encoding prevents execution.
Mitigation direction
- Review Adobe advisory APSB26-24 for the corrected release applicable to each AEM deployment branch.
- Update AEM 6.5 installations running version 6.5.23 or earlier according to Adobe guidance.
- Restrict form-submission and content-authoring privileges until remediation is complete.
- Review untrusted stored form content and remove unexpected scripts or event-handler markup.
Validation and detection
- Inventory AEM products, deployment models, and exact installed versions.
- Compare each deployment against the affected ranges and corrected boundaries in Adobe APSB26-24.
- Identify roles permitted to populate or modify relevant form fields.
- Use authorized, non-destructive testing to confirm stored input is safely encoded when rendered.
- Review application and content audit logs for suspicious form-field changes.
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-2026-27262 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.