CVE-2025-50455: SQL injection vulnerability exists in the order_by parameter of the /customers/search endpoint in Alex Tsel...
SQL injection vulnerability exists in the order_by parameter of the /customers/search endpoint in Alex Tselegidis EasyAppointments <= 1.5.1. The vulnerability arises from unsanitized user input passed to the order_by method of the CodeIgniter Query Builder, enabling attackers to perform time-based queries and schema enumeration. Under certain MySQL configurations, the flaw may lead to remote code execution by writing a PHP shell using INTO OUTFILE.
Security readout for executives and security teams
Plain-English summary
EasyAppointments through version 1.5.1 contains a critical flaw in a customer-search function. An unauthenticated remote attacker may manipulate database queries, potentially exposing or altering sensitive data. Under specific MySQL permissions and configurations, impact could escalate to server compromise.
Executive priority
Treat as an immediate remediation priority for internet-facing or externally reachable deployments. First establish version and route exposure, then reduce access and database privileges while awaiting or applying vendor guidance. Investigate suspicious activity, but do not characterize the environment as compromised without evidence.
Technical view
The /customers/search endpoint passes unsanitized order_by input to CodeIgniter Query Builder, creating SQL injection. Reported capabilities include time-based inference and schema enumeration. Under certain MySQL configurations, database file-writing privileges may permit remote code execution. The supplied CVSS 3.1 score is 9.1.
Likely exposure
Deployments running EasyAppointments 1.5.1 or earlier are potentially exposed when /customers/search is remotely reachable. Actual impact depends on endpoint accessibility, application configuration, database permissions, and MySQL file-writing controls. The bundle's structured affected-product field is incomplete, so asset owners should verify versions directly.
Exploitation context
A public proof-of-concept is referenced, increasing the likelihood of testing or attempted exploitation. However, the source bundle reports that CVE-2025-50455 is not in CISA KEV and provides no evidence of active exploitation. Remote code execution is conditional, not an assured outcome.
Researcher notes
The core claim and CVSS data are specific, but the bundle does not name a fixed version or vendor mitigation. Its normalized affected-product fields are marked n/a despite the description naming EasyAppointments through 1.5.1. Validate against current vendor guidance before closing remediation work.
Mitigation direction
Check EasyAppointments vendor guidance immediately and apply a vendor-supported fixed release when identified.
Temporarily restrict access to /customers/search until remediation is confirmed.
Prevent the application database account from writing server-side files.
Apply least-privilege database permissions and monitor rejected or abnormal queries.
Use defensive filtering only as temporary protection, not as a substitute for vendor remediation.
Validation and detection
Inventory all EasyAppointments deployments and identify versions 1.5.1 or earlier.
Confirm whether /customers/search is reachable from untrusted networks.
Review application, proxy, and database logs for abnormal order_by requests or unusual response delays.
Verify the database service account lacks unnecessary file-writing privileges.
Perform an authorized, non-destructive assessment in staging after remediation.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
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 · medium confidence lookup
CWE-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. 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.
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.
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
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.
1CVSS vectors
3Timeline events
1ADP providers
4Source links
SSVC decision data
CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: yesTechnical Impact: total
CVSS vector scores
1 official score
We 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.