Security readout for executives and security teams
Plain-English summary
e107 CMS 3.2.1 has a high-impact admin-only upload flaw. A logged-in administrator can abuse the Media Manager remote URL upload feature to overwrite files outside the intended upload area. If an admin account is compromised or malicious, this could compromise the website. No cited source confirms active exploitation.
Executive priority
Prioritize remediation for internet-facing or business-critical e107 sites. The issue is not unauthenticated, but a compromised admin account could turn into full site compromise. Treat as high urgency where admin access controls are weak or exposed.
Technical view
The issue is a path traversal and upload restriction bypass in the admin image.php component. The upload_caption parameter is reportedly not properly sanitized, allowing traversal outside the upload directory and arbitrary server file overwrite. The supplied CVSS v4 score is 8.6, with high confidentiality, integrity, and availability impact, but privileges required are high.
Likely exposure
Exposure is limited to organizations running e107 CMS version 3.2.1, especially where the admin interface is reachable and administrator accounts are broadly accessible. The sources do not identify other affected versions or a specific fixed release.
Exploitation context
A public ExploitDB reference exists, but CISA KEV status is false in the supplied bundle. The vulnerability requires authenticated administrator privileges, so risk is highest after admin credential theft, insider misuse, or weak admin access controls.
Researcher notes
Evidence comes from CVE metadata, VulnCheck, and ExploitDB references. The record describes e107 CMS 3.2.1 only. Do not infer broader version impact or a fixed version from the supplied sources. Public exploit availability is cited, but active exploitation is not established.
Mitigation direction
- Check e107 vendor guidance and downloads for a fixed or newer maintained release.
- Restrict admin interface access to trusted networks or VPN where feasible.
- Limit administrator accounts and enforce strong authentication controls.
- Review web server file permissions to reduce overwrite impact.
- Back up website files and configuration before remediation changes.
- Monitor admin media uploads and unexpected changes to critical files.
Validation and detection
- Inventory e107 CMS deployments and confirm version 3.2.1 status.
- Identify whether admin image.php and Media Manager remote URL upload are available.
- Review admin account list for unnecessary or shared accounts.
- Check logs for unusual Media Manager uploads or file overwrite events.
- Verify file integrity for configuration, script, and web-root files.
- Track vendor advisories because supplied sources do not name a fixed version.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupCWE-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-50939 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
- High
- CVSS
- 8.6 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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.
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:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.6HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-50910CVE reference · exploit
- Official Vendor HomepageCVE reference · product
- Software Download PageCVE reference · product
- VulnCheck Advisory: e107 CMS v3.2.1 - Upload Restriction Bypass with Path Traversal File OverrideCVE reference · third-party-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.