CVE-2021-33578
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedEcho ShareCare 8.15.5 is susceptible to SQL injection vulnerabilities when processing remote input from both authenticated and unauthenticated users, leading to the ability to bypass authentication, exfiltrate Structured Query Language (SQL) records, and manipulate data.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceSQL injection vulnerability in Echo ShareCare 8.15.5 allows remote attackers to inject malicious SQL queries through insufficiently sanitized user input. Both authenticated and unauthenticated users can exploit this to bypass authentication mechanisms, extract sensitive database records, and modify data.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 8.15.5CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Echo ShareCare installation versionCheck product version via administration panel, installed packages, or version file in the application root directoryAffected if Version is exactly 8.15.5 (matching the affected release)
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Locate authentication moduleFind the login/authentication entry point - typically index.php, login.php, or similar in the web rootAffected if Authentication module exists and handles user credentials via POST/GET parameters
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Inspect SQL query construction in auth codeOpen the authentication module file and search for SQL query strings that concatenate or embed user input (e.g., username, password variables) directly into WHERE clausesAffected if SQL queries embed user-supplied input without using prepared statements or parameterized queries
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Check for input sanitization functionsSearch the codebase for sanitization functions (e.g., mysqli_real_escape_string, htmlspecialchars, parameterized bindings) applied to user inputs before SQL executionAffected if No sanitization or parameterized query mechanisms are found in authentication-related SQL executions
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Test for SQL injection vulnerabilitySubmit a single quote (') in username/password fields during login; observe for SQL syntax errors in response or unexpected authentication behaviorAffected if Application returns database errors or allows authentication bypass with specially crafted input like admin'--
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Review database user privilegesCheck the database user account used by the application - it should have minimal privileges (no DROP, no unnecessary table access)Affected if Application database user has elevated privileges beyond SELECT/INSERT/UPDATE on required tables
Environment is affected if running Echo ShareCare version 8.15.5 AND the login/authentication module constructs SQL queries by directly embedding user input without parameterized queries or proper sanitization.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade to a patched version of Echo ShareCare. Until a patch is available, implement parameterized queries/prepared statements and comprehensive input validation across all user-facing input paths, particularly authentication-related queries.
- Consultation6.0 h
- Implementation20.0 h
- Testing10.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $11,808.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-33578 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-33578 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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