Security readout for executives and security teams
Plain-English summary
DokuWiki 2018-04-22b has a password-reset weakness that can reveal whether a username exists. This does not directly compromise data, but it helps attackers build valid user lists for phishing, password guessing, or follow-on attacks.
Executive priority
Treat as a moderate-priority exposure reduction item. It is unlikely to be a standalone breach path, but it can materially improve attacker targeting against accounts on affected DokuWiki systems.
Technical view
CVE-2019-25338 is a CWE-204 observable response discrepancy in DokuWiki 2018-04-22b "Greebo." Unauthenticated requests to password reset can produce distinguishable responses for valid versus invalid usernames. CVSS v4.0 is 6.9.
Likely exposure
Exposure is likely limited to internet-facing or internally reachable DokuWiki 2018-04-22b instances using the affected password reset behavior. Organizations without DokuWiki, or running other versions, are not shown affected by the provided sources.
Exploitation context
The source bundle includes an ExploitDB reference, indicating public exploit information exists. There is no KEV listing and no provided evidence of active exploitation. The main risk is reconnaissance that enables credential attacks.
Researcher notes
Evidence identifies DokuWiki 2018-04-22b only. Sources do not name a fixed version or official mitigation. Avoid assuming broader version impact without vendor confirmation. Public exploit information exists, but active exploitation is not established.
Mitigation direction
- Inventory DokuWiki instances and identify any running 2018-04-22b "Greebo."
- Review DokuWiki vendor guidance and downloads for supported versions or relevant fixes.
- Harden password reset messaging to avoid revealing account validity, if configurable.
- Monitor authentication and password reset activity for unusual enumeration patterns.
- Require strong authentication controls, such as MFA, where available.
Validation and detection
- Confirm the deployed DokuWiki version from asset records or application administration.
- Review password reset responses for inconsistent messages between valid and invalid usernames.
- Check web logs for repeated password reset attempts across many usernames.
- Verify any vendor-recommended update or configuration change is applied.
- Document exposed DokuWiki instances and restrict access where business use permits.
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
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CWE-204: Exact CWE lookup
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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-2019-25338 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.9 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
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:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
6.9MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-47731CVE reference · exploit
- DokuWiki Official HomepageCVE reference · product
- DokuWiki Download PageCVE reference · product
- VulnCheck Advisory: Dokuwiki 2018-04-22b - Username EnumerationCVE reference · third-party-advisory
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.
Observable Response Discrepancy
Observable Response Discrepancy represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.