Security readout for executives and security teams
Plain-English summary
YetiShare password reset messaging can reveal whether a supplied email belongs to an account. This does not directly compromise files or passwords, but it can help attackers build valid user lists for phishing, credential attacks, or targeted abuse.
Executive priority
Treat as a moderate exposure-management issue, especially for public file-sharing portals with sensitive user populations. Prioritize alongside phishing and credential-attack defenses rather than as an emergency outage-level event.
Technical view
CVE-2019-19806 affects _account_forgot_password.ajax.php in MFScripts YetiShare 3.5.2 through 4.5.3. The forgot-password flow returns different messages based on whether an email is configured, creating an account enumeration weakness. The source bundle does not provide CVSS, CWE, patch, or exploit details.
Likely exposure
Exposure is most likely on public YetiShare deployments running versions 3.5.2 through 4.5.3 with password recovery reachable by unauthenticated users.
Exploitation context
The source bundle does not indicate active exploitation, and CVE is not listed as KEV. Abuse would be reconnaissance-oriented: confirming valid accounts before phishing, password spraying, or social engineering.
Researcher notes
Evidence is limited to the CVE description and the linked vulnerability write-up. No CVSS vector, CWE mapping, official affected CPEs, or vendor fix is included in the supplied bundle.
Mitigation direction
- Identify any YetiShare deployments and confirm exact versions.
- Check MFScripts/YetiShare guidance for patched releases or supported workarounds.
- Ensure forgot-password responses do not disclose account existence, if vendor-supported.
- Rate-limit and monitor password recovery attempts where feasible.
- Review exposed recovery endpoints for unauthenticated access controls.
Validation and detection
- Inventory internet-facing YetiShare instances and their versions.
- In a controlled test, compare forgot-password responses for registered and unregistered emails.
- Review logs for repeated password recovery probes across many addresses.
- Confirm any vendor patch or workaround removes distinguishable account-existence messages.
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.
CVE-2019-19806 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://medium.com/%40jra8908/yetishare-3-5-2-4-5-3-multiple-vulnerabilities-2d01d0cd7459CVE reference · x_refsource_MISC
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.