JspwikiApplication · Apache
CVE-2018-20242
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 · uneditedA carefully crafted URL could trigger an XSS vulnerability on Apache JSPWiki, from versions up to 2.10.5, which could lead to session hijacking.
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 confidenceApache JSPWiki versions up to 2.10.5 contain a reflected Cross-Site Scripting (XSS) vulnerability triggered by specially crafted URLs. The vulnerability allows attackers to inject malicious scripts that execute in the context of victim sessions, potentially leading to session hijacking and unauthorized actions.
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
JspwikiApplication
<= 2.10.5CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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 checksWork through these to decide whether this CVE applies to you.
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Locate JSPWiki installation directoryIdentify the directory where Apache JSPWiki is deployed on your server (commonly in webapps/ or var/lib/ depending on your setup).Affected if You cannot locate a JSPWiki installation - you may not be running this product.
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Find the installed version numberCheck the version by inspecting the version.properties file in WEB-INF/ directory, or access the /About page in the JSPWiki web interface.Affected if The version cannot be determined or the About page is inaccessible.
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Compare version against affected rangeIf the version is 2.10.5 or lower (including 2.10.0 through 2.10.5, and any 2.9.x or earlier), the installed version is within the vulnerable range.Affected if Your installed version is 2.10.5 or any earlier version (e.g., 2.10.0, 2.9.1, 2.8.x).
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Verify the application handles URL parametersConfirm JSPWiki is actively running and processing HTTP requests with URL parameters (e.g., ?param=value).Affected if JSPWiki is running and accepts user-supplied URL parameters.
Your environment is affected if Apache JSPWiki version 2.10.5 or any earlier version is installed and actively handling HTTP requests with URL parameters.
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 Apache JSPWiki beyond 2.10.5. As a temporary mitigation, implement output encoding and input validation on user-supplied URL parameters.
Fix this in Jspwiki
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-20242 — 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-2018-20242 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
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