Security readout for executives and security teams
Plain-English summary
CVE-2022-50907 affects e107 CMS 3.2.1. An attacker with administrative access can bypass upload restrictions and place executable PHP files, resulting in server-side code execution. This is serious for any public or business-critical e107 site, but it requires an authenticated administrator-level account.
Executive priority
Treat as high priority for any e107 3.2.1 site, especially internet-facing systems. The main business risk is full compromise after admin account misuse or compromise. Prioritize inventory, access restriction, vendor update review, and file integrity checks.
Technical view
The issue is a CWE-434 unrestricted upload weakness in e107 CMS 3.2.1. Sources describe manipulation of an upload URL parameter in the Media Manager import feature to upload PHP into parent directories. CVSS v4.0 is 8.6, with network access, low complexity, high privileges required, and high impact to confidentiality, integrity, and availability.
Likely exposure
Exposure is likely limited to organizations running e107 CMS version 3.2.1. Risk is higher where the admin interface is internet-accessible, administrator credentials are weak or shared, or admin accounts have been compromised.
Exploitation context
A public ExploitDB entry exists, and VulnCheck describes the vulnerability as admin upload restriction bypass plus RCE. The provided sources do not show CISA KEV listing or confirmed active exploitation. Exploitation requires authenticated administrative privileges.
Researcher notes
The evidence supports authenticated admin-level RCE through upload restriction bypass. Do not assume unauthenticated exploitation from the provided sources. Patch status is not stated in the bundle, so remediation should be tied to current vendor guidance rather than an inferred fixed version.
Mitigation direction
- Identify any e107 CMS 3.2.1 deployments.
- Check e107 vendor guidance and downloads for a fixed or supported version.
- Restrict admin interface access to trusted networks or VPN.
- Review and reduce CMS administrator accounts.
- Remove unexpected PHP files from upload or media directories.
Validation and detection
- Confirm installed e107 CMS version on each site.
- Verify whether Media Manager import is accessible to administrators.
- Audit admin account activity for unusual upload behavior.
- Inspect upload and media paths for unexpected PHP files.
- Review web logs for suspicious Media Manager import requests.
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-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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program 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-2022-50907 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 e107 CMS Vendor HomepageCVE reference · product
- e107 CMS Download PageCVE reference · product
- VulnCheck Advisory: e107 CMS v3.2.1 - Admin Upload Restriction Bypass + RCECVE 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.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.