Analyst readout for executives and security teams
Plain-English summary
CVE-2015-5356 is an XSS issue in GetSimple CMS before 3.3.6. A remote attacker could inject script or HTML through the file browser admin page parameter. If an administrator is exposed to malicious content, the issue could affect the admin session or site management actions.
Executive priority
Treat this as a moderate-priority legacy CMS risk. Patch affected GetSimple CMS installations, but prioritize externally reachable admin portals and systems with privileged content workflows.
Technical view
The CVE describes cross-site scripting in admin/filebrowser.php through the func parameter in GetSimple CMS versions before 3.3.6. The provided sources point to the 3.3.6 release, a fixing commit, and the related GitHub issue. No CVSS, CWE, or detailed preconditions are included in the bundle.
Likely exposure
Exposure is most likely on GetSimple CMS deployments older than 3.3.6, especially where the admin interface is reachable by untrusted users or networks.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. It only supports that the flaw is publicly disclosed and fixed upstream.
Researcher notes
Evidence is limited to the CVE description and upstream GitHub references. The bundle does not provide CVSS metrics, authentication requirements, exploit maturity, or proof of active exploitation. Avoid assuming broader product impact beyond GetSimple CMS before 3.3.6.
Mitigation direction
- Upgrade GetSimple CMS to version 3.3.6 or later.
- Confirm the upstream fixing commit is present if using a custom build.
- Restrict access to the CMS admin area to trusted networks and users.
- Review vendor guidance before applying nonstandard workarounds.
Validation and detection
- Inventory all GetSimple CMS deployments and record installed versions.
- Check whether any installation is older than 3.3.6.
- Review web logs for unusual access to admin/filebrowser.php.
- Verify admin interfaces are not publicly exposed unnecessarily.
Public sources used
Based on public source material and reviewed before publication.
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-2015-5356 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/GetSimpleCMS/GetSimpleCMS/releases/tag/v3.3.6CVE reference · x_refsource_CONFIRM
- https://github.com/GetSimpleCMS/GetSimpleCMS/commit/cb1845743bd11ba74a49b6b522c080df86a17d51CVE reference · x_refsource_CONFIRM
- https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1059CVE reference · x_refsource_CONFIRM
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.