CVE-2018-11554
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 · uneditedThe forgotten-password feature in index.php/member/reset/reset_email.html in YzmCMS v3.2 through v3.7 has a Response Discrepancy Information Exposure issue and an unexpectedly long lifetime for a verification code, which makes it easier for remote attackers to hijack accounts via a brute-force approach.
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 · high confidenceYzmCMS v3.2-v3.7 contains a forgotten-password endpoint that suffers from information disclosure (different responses for existing vs non-existing accounts, allowing email enumeration) and uses verification codes with an excessively long lifetime, enabling attackers to brute-force reset codes and hijack accounts.
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>= 3.2, <= 3.7CVSS 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:3.0/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 YzmCMS versionLocate the version file in the YzmCMS installation directory or check the admin login page footer for the version number. CMS systems typically store version information in a version.php file or display it in the admin interface.Affected if The installed version is between 3.2 and 3.7 inclusive (versions 3.2, 3.3, 3.4, 3.5, 3.6, or 3.7)
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Confirm forgotten password endpoint existsLocate the password reset functionality in the member module. In YzmCMS, this is typically accessible at a URL path containing '/member/index/forgot_password' or similar route under the member component.Affected if The forgotten password endpoint is present and accessible without authentication
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Verify vulnerability conditions existInspect the password reset code logic in the member module. Check whether the system returns different error messages for existing versus non-existing accounts, and examine the verification code generation/validation logic for the lifetime duration.Affected if The code returns distinguishable responses for valid vs invalid accounts (email enumeration possible) AND uses verification codes with long or no expiration (brute-force possible)
The environment is affected if it runs YzmCMS version 3.2 through 3.7 and has the vulnerable password reset endpoint with the described behavior present.
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.
dbcve · scopedImplement uniform responses regardless of account existence and reduce the verification code lifetime to a short window (e.g., 5-15 minutes) with rate limiting on reset attempts.
YzmCMS version 3.8 or later
- 1. Navigate to the official YzmCMS repository or download page at github.com
- 2. Download the latest stable version of YzmCMS (version 3.8 or higher, as versions 3.2-3.7 are affected)
- 3. Back up your current database and website files before upgrading
- 4. Upload the new version files, overwriting the existing installation
- 5. Run any database migration scripts included in the upgrade
- 6. Test the password reset functionality at index.php/member/reset/reset_email.html to verify the fix
- 7. Confirm that verification codes now have appropriate expiration times and that response messages do not leak information about account existence
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-11554 — 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-2018-11554 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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- 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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