Security readout for executives and security teams
Plain-English summary
Easy!Appointments 1.5.2 and earlier can allow a malicious website to make a logged-in administrator’s browser perform sensitive actions. The reported impact includes creating admin accounts, changing admin email or password, and full admin account takeover. Successful abuse requires user interaction, such as an administrator visiting attacker-controlled content while authenticated.
Executive priority
Treat as high priority for any organization using Easy!Appointments. The vulnerability can compromise administrator control of scheduling systems, but exploitation requires an authenticated admin’s browser interaction. Move quickly to identify deployments, check vendor guidance, and monitor for unauthorized admin changes.
Technical view
CVE-2026-23622 is a CSRF protection bypass in Easy!Appointments. The CSRF check in EA_Security.php reportedly enforces tokens only for POST and returns early for non-POST methods. Some state-changing endpoints accept GET or request parameters, allowing cross-site requests to trigger privileged changes. CVSS v4.0 is 7.4 high; CWE-352 applies.
Likely exposure
Self-hosted Easy!Appointments deployments running version 1.5.2 or earlier are in scope. Exposure is higher where administrators use the application from browsers that may also visit untrusted sites. The sources do not identify specific hosting configurations, public internet exposure requirements, or affected CPEs.
Exploitation context
The CVE record marks this as requiring user interaction and no prior attacker privileges. The provided sources do not state active exploitation, and it is not listed as KEV in the source bundle. The impact is serious because a successful CSRF can lead to administrator account takeover.
Researcher notes
Evidence comes from the CVE record and GitHub advisory reference in the source bundle. The bundle names affected versions and root cause, but does not include a fixed version or confirmed exploitation. Avoid assuming patch availability beyond vendor guidance. Validate behavior safely in authorized test environments only.
Mitigation direction
- Identify all Easy!Appointments instances and confirm their versions.
- Check the GitHub advisory and vendor project for fixed versions or official guidance.
- Prioritize remediation for internet-facing or business-critical scheduling deployments.
- Until fixed, reduce administrator exposure to untrusted links and websites.
- Review administrative accounts and settings for unauthorized changes.
Validation and detection
- Confirm whether deployed Easy!Appointments versions are 1.5.2 or earlier.
- Review application logs for unexpected admin account creation or credential changes.
- Check whether sensitive endpoints accept non-POST state-changing requests.
- Verify CSRF protections apply to state-changing requests after remediation.
- Document affected instances, owners, and remediation status.
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-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-23622 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
- 7.4 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
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:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
7.4HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-54v4-4685-vwrjCVE 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.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.