Security readout for executives and security teams
Plain-English summary
SuiteCRM versions before 7.10.35, and 7.11.x/7.12.x before 7.12.2, had a stored XSS flaw in the web interface. An attacker could upload an attachment that causes JavaScript to run later in a user's browser. Business impact depends on who views the attachment and their permissions.
Executive priority
Treat as a targeted remediation item for affected SuiteCRM environments, especially internet-facing or partner-accessible systems. The issue can affect user sessions and CRM data integrity, but available sources do not show active exploitation or a critical severity rating.
Technical view
The CVE describes persistent XSS introduced through attachment upload handling in SuiteCRM's web interface. A remote attacker can store arbitrary JavaScript for later execution by a victim browser. The sources do not provide CVSS, CWE, detailed prerequisites, or a vendor advisory beyond release references.
Likely exposure
Exposure is likely limited to organizations running affected SuiteCRM branches with attachment upload functionality reachable by untrusted or lower-privileged users. Internet-facing CRM portals or broadly accessible internal CRM deployments deserve priority review.
Exploitation context
CISA KEV is false in the provided bundle, and no cited source states active exploitation. A public CVE write-up is listed, but the bundle does not establish exploitation in the wild or reliable exploitation conditions.
Researcher notes
Evidence is sparse. The CVE identifies stored XSS through attachment upload and fixed version boundaries, but omits CVSS, CWE, exploit prerequisites, sink details, and patch mechanics. Validate using version checks and safe, non-destructive review of upload handling.
Mitigation direction
- Upgrade SuiteCRM 7.10.x to 7.10.35 or later.
- Upgrade SuiteCRM 7.11.x or 7.12.x to 7.12.2 or later.
- Review vendor release notes for any additional upgrade or configuration guidance.
- Restrict attachment uploads to trusted users until patched.
- Monitor CRM activity for suspicious uploaded attachments and unusual script behavior.
Validation and detection
- Inventory SuiteCRM instances and record exact installed versions.
- Confirm no production instance runs before 7.10.35 on the 7.10 branch.
- Confirm no 7.11.x or 7.12.x instance runs before 7.12.2.
- Review upload permissions for roles exposed to external or low-trust users.
- Check security logs for suspicious attachment upload patterns.
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.
CVE-2021-45903 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://docs.suitecrm.com/admin/releases/7.10.x/#_7_10_35CVE reference · x_refsource_MISC
- https://docs.suitecrm.com/admin/releases/7.12.x/#_7_12_2CVE reference · x_refsource_MISC
- https://github.com/ach-ing/cves/blob/main/CVE-2021-45903.mdCVE reference · x_refsource_MISC
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.