VulnerabilityModified
CVE-2018-14642
An information leak vulnerability was found in Undertow.
MEDIUM 5.3EPSS 2.11%
Does this matter?
Lower severity and a low EPSS score (2.11%). Track it; it rarely justifies an emergency change on its own.
Description
An information leak vulnerability was found in Undertow. If all headers are not written out in the first write() call then the code that handles flushing the buffer will always write out the full contents of the writevBuffer buffer, which may contain data from previous requests.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 2.11% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- redhat/undertow · redhat/jboss enterprise application platform
- Source
- secalert@redhat.com
EPSS 2.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://access.redhat.com/errata/RHSA-2019:0362Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:0364Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:0365Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:0380Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:1106Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:1107Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:1108Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:1140Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14642Issue Tracking, Patch, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:0362Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:0364Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:0365Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:0380Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:1106Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:1107Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:1108Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:1140Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14642Issue Tracking, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.