Security readout for executives and security teams
Plain-English summary
A low-privileged user can store malicious JavaScript in certain Adobe Experience Manager form fields. The script may run when another user views the affected page, potentially exposing browser-accessible information or enabling actions in that user’s session. Exploitation requires both authenticated access and victim interaction.
Executive priority
Prioritize routine remediation, accelerated for internet-facing or multi-author environments where low-privileged users contribute content viewed by administrators. The moderate severity, required authentication, and victim interaction reduce urgency compared with unauthenticated compromise, but privileged-session exposure can still create meaningful business risk.
Technical view
CVE-2026-27235 is stored cross-site scripting (CWE-79) with CVSS 3.1 score 5.4. It is network-accessible, low complexity, requires low privileges and user interaction, changes security scope, and can cause limited confidentiality and integrity impact without affecting availability. The description identifies AEM 6.5.23 and earlier as affected.
Likely exposure
Exposure is most likely where untrusted or low-privileged AEM users can submit content through vulnerable form fields that other users later view. Risk increases when viewers have privileged AEM sessions. The supplied data also lists Cloud Service and 6.5 LTS boundaries, but their exact affected-range interpretation is incomplete; verify against Adobe’s advisory.
Exploitation context
The supplied sources do not establish active exploitation, and this CVE is not identified as KEV. Abuse requires a low-privileged attacker to persist script content and a victim to visit the affected page. No conclusions should be drawn about public exploit availability from this bundle.
Researcher notes
The CVSS vector is AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. Evidence supports stored XSS through vulnerable form fields, but does not identify specific fields, components, exploit availability, indicators, or observed attacks. The structured affected-version entries are ambiguous beyond the explicit statement that AEM 6.5.23 and earlier are affected.
Mitigation direction
- Review Adobe advisory APSB26-24 and apply the vendor-supported update for each deployed AEM edition.
- Upgrade AEM 6.5 installations running 6.5.23 or earlier.
- Restrict low-privileged access to affected content-entry workflows until remediation is complete.
- Review submitted content for unexpected scripts or active HTML.
Validation and detection
- Inventory AEM editions and versions, including Cloud Service, 6.5 LTS, and standard 6.5.
- Confirm standard AEM 6.5 systems are newer than 6.5.23.
- Compare Cloud Service and LTS versions directly with Adobe advisory APSB26-24.
- Verify untrusted roles cannot store executable script content in relevant form fields.
- Review AEM content and audit records for suspicious field submissions.
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-2026-27235 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.