CVE-2018-12536
MEDIUMEPSS 91th pctlDescription
In Eclipse Jetty Server, all 9.x versions, on webapps deployed using default Error Handling, when an intentionally bad query arrives that doesn't match a dynamic url-pattern, and is eventually handled by the DefaultServlet's static file serving, the bad characters can trigger a java.nio.file.InvalidPathException which includes the full path to the base resource directory that the DefaultServlet and/or webapp is using. If this InvalidPathException is then handled by the default Error Handler, the InvalidPathException message is included in the error response, revealing the full server path to the requesting system.
How to fix
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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Exploit Intelligence
High risk: more likely to be exploited than 91% of all known CVEs.
References
Related Vulnerabilities
Other CWE-209 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-29059 | High | 7.5 | 99% | KEV | - |
| CVE-2021-22145 | Medium | 6.5 | 76% | - | - |
| CVE-2010-3332 | Medium | 6.4 | 67% | - | - |
| CVE-2025-47813 | Medium | 4.3 | 63% | KEV | Fix |
| CVE-2025-62168 | Critical | 10.0 | 63% | - | Fix |
| CVE-2013-7331 | Medium | 6.5 | 58% | KEV | - |
Common questions
How do I fix CVE-2018-12536?
Upgrade jetty9 on debian 12 to 9.2.25-1 or later.
Is CVE-2018-12536 being actively exploited?
Not that we know of. CVE-2018-12536 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 4.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 91% of all scored CVEs.
How severe is CVE-2018-12536?
CVE-2018-12536 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2018-12536 affect?
Published advisories record a fix for jetty9 (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.