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Hard-coded CredentialsWeakness · CWE-798

CVE-2026-3873

HIGH · 7.2 CVSS v3.1 Published 2026-03-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
81/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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 · unedited
Use of Hard-coded Credentials vulnerability in Avantra allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Avantra: before 25.3.0.

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 confidence

Avantra contains hard-coded credentials embedded in its codebase or configuration that allow attackers to bypass authentication. These credentials grant access to functionality that should be restricted by Access Control Lists (ACLs), meaning the ACLs are either missing, misconfigured, or not being properly enforced when valid credentials are presented.

MitigationReplace all hard-coded credentials with properly managed secrets (e.g., environment variables, vault solutions) and enforce strict ACL validation on all protected functions to ensure unauthorized users cannot access restricted features even with valid credentials.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS 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
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

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 checks

Work through these to decide whether this CVE applies to you.

  1. Locate Avantra installation
    Check for Avantra installation directories (common paths: /opt/avantra, /usr/local/avantra, C:\Program Files\Avantra) or running processes (ps aux | grep -i avantra or Task Manager). Also check for Avantra service entries.
    Affected if Avantra is installed and running on the system
  2. Search for hard-coded credentials in configuration files
    Examine Avantra configuration directories for files containing embedded passwords, API keys, tokens, or secret keys. Look in config.xml, application.properties, .conf files, and any XML/YAML configuration under the Avantra installation path. Search for patterns like password=, apiKey=, secret=, token=, or base64-encoded strings that may represent credentials.
    Affected if Hard-coded credentials (passwords, API keys, tokens, or secrets) are found embedded in any configuration file
  3. Inspect database or credential store configurations
    Check database connection files, credential stores, or secrets management configurations under the Avantra installation. Look for credentials stored in plain text or weakly encrypted formats.
    Affected if Credentials are stored in plain text or weak encryption rather than using a vault or secrets management solution
  4. Verify ACL enforcement on protected functions
    Review ACL configuration files or role-based access control (RBAC) settings within Avantra. Check if protected endpoints or functions have explicit ACL rules defined and whether those rules are being applied correctly during authentication.
    Affected if ACL rules are missing, misconfigured, or not being enforced when authenticated credentials (including hard-coded ones) are presented

The environment is affected if Avantra is installed and contains hard-coded credentials in configuration files or if ACLs are not properly enforcing access restrictions on protected functions.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Replace all hard-coded credentials with properly managed secrets (e.g., environment variables, vault solutions) and enforce strict ACL validation on all protected functions to ensure unauthorized users cannot access restricted features even with valid credentials.

Recommended fix Moderate confidence

25.3.0

  1. Verify current Avantra installation version by checking the web UI or command line interface
  2. Backup current Avantra configuration and database according to standard backup procedures
  3. Download Avantra version 25.3.0 or later from the official vendor distribution channel
  4. Stop the Avantra services on the affected system
  5. Install the upgraded Avantra version 25.3.0 following the vendor's upgrade documentation
  6. Start Avantra services and verify successful startup
  7. Validate that the hard-coded credentials have been removed by reviewing configuration files
  8. Confirm that access control functions properly with the updated version
Caveat Review Avantra 25.3.0 release notes for any configuration changes or deprecated features before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA4.0 h
28.0 hours of engineering $4,980
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-3873 in production — separate from our analysis above.

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What this is

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.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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