Security readout for executives and security teams
Plain-English summary
CVE-2018-12043 is a cross-site scripting issue reported in Symphony CMS 2.7.6. It affects the Pages content area, meaning malicious script could potentially run in a user's browser when that area is viewed. The public data does not provide severity scoring, exploit details, or a named fixed release.
Executive priority
Treat this as a targeted CMS hygiene issue, not an emergency based on current evidence. Prioritize if Symphony CMS 2.7.6 is internet-facing or used by multiple content editors.
Technical view
The report identifies XSS in content/content.blueprintspages.php in Symphony 2.7.6 via the pages content page. The source bundle provides no CVSS, CWE, authentication context, payload mechanics, or affected CPEs. A linked SymphonyCMS commit appears remediation-related, but the sources do not name a fixed version.
Likely exposure
Exposure is likely limited to organizations running Symphony CMS 2.7.6, especially where users can access or manage the Pages content interface. The sources do not establish exposure for other versions or products.
Exploitation context
The CVE is not listed as CISA KEV in the supplied bundle. No cited source states active exploitation, public exploitation, or real-world compromise activity.
Researcher notes
The public record is sparse. Key unknowns include privilege requirements, exploit preconditions, affected version range, and fixed release mapping. Avoid extrapolating beyond Symphony 2.7.6 and the linked commit without additional vendor evidence.
Mitigation direction
- Inventory Symphony CMS instances and identify any running version 2.7.6.
- Review the linked SymphonyCMS commit and vendor guidance for the corrected code path.
- Check vendor releases for a fixed version before upgrading or backporting.
- Restrict administrative content access to trusted users while remediation is assessed.
- Monitor logs and admin activity for unusual page-content changes.
Validation and detection
- Confirm whether Symphony CMS 2.7.6 is deployed in production or staging.
- Check whether content/content.blueprintspages.php includes the linked corrective commit.
- Review access controls for the Pages content page.
- Verify remediation in a test environment before production rollout.
- Document any compensating controls if immediate patching is delayed.
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-2018-12043 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://github.com/symphonycms/symphony-2/commit/1ace6b31867cc83267b3550686271c9c65ac3ec0CVE 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.