Security readout for executives and security teams
Plain-English summary
This CVE affects the fabarea media_upload extension for TYPO3. A pathname traversal flaw in file listing logic could let a low-privileged, network-adjacent attacker read, modify, or disrupt limited file data. The supplied sources name version 0.9.0 as the fix, but do not define exact affected versions.
Executive priority
Prioritize remediation for TYPO3 environments where lower-privileged users can access media upload features. This is not evidenced as actively exploited, but it can affect confidentiality, integrity, and availability of file-handling workflows.
Technical view
CVE-2016-15017 is a CWE-21 pathname traversal issue in getUploadedFileList within Classes/Service/UploadFileService.php. CVSS v3.1 is 5.5 with AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L. VulDB tracks it as VDB-217786. The referenced fix is commit b25d42a4981072321c1a363311d8ea2a4ac8763a and release 0.9.0.
Likely exposure
Exposure is likely limited to TYPO3 deployments using fabarea media_upload, especially installations below release 0.9.0. The source bundle lists affected versions as n/a, so teams must confirm installed extension versions directly rather than relying on a complete version range.
Exploitation context
No KEV listing or supplied source indicates active exploitation. The CVSS vector requires adjacent network access and low privileges, with no user interaction. Treat this as a meaningful internal or semi-trusted-access risk rather than an unauthenticated internet-wide emergency.
Researcher notes
The public record identifies the vulnerable function and patch, but not a precise affected version range. Avoid assuming broader TYPO3 exposure. Validation should focus on extension presence, version, patch state, and access paths to media upload functionality.
Mitigation direction
- Upgrade fabarea media_upload to version 0.9.0 or later.
- Confirm the patch commit is present if using a custom build.
- Review vendor issue and release notes before deployment.
- Limit access to media upload functions until upgraded where feasible.
Validation and detection
- Inventory TYPO3 sites for the fabarea media_upload extension.
- Check the installed extension version against release 0.9.0.
- Verify patched UploadFileService.php code is deployed.
- Review relevant logs for unusual media upload or file listing activity.
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-21: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2016-15017 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
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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 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:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L2.13.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://vuldb.com/?id.217786CVE reference · vdb-entry, technical-description
- https://vuldb.com/?ctiid.217786CVE reference · signature, permissions-required
- https://github.com/fabarea/media_upload/issues/6CVE reference · issue-tracking
- https://github.com/fabarea/media_upload/commit/b25d42a4981072321c1a363311d8ea2a4ac8763aCVE reference · patch
- https://github.com/fabarea/media_upload/releases/tag/0.9.0CVE reference · patch
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.
DEPRECATED: Pathname Traversal and Equivalence Errors
DEPRECATED: Pathname Traversal and Equivalence Errors represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.