CVE-2018-20843
HIGH7.5EPSS 5.6%expat - security update
Published: 6/24/2019Modified: 4/28/2026
Description
In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).
Affected packages (5)
- Alpine/expatfrom 0, < 2.2.7-r0
- Debian/expatfrom 0, < 2.2.6-2
- Debian/expatfrom 0, < 2.1.0-6+deb8u5
- Debian/expatfrom 0, < 2.2.0-2+deb9u2
- Debian/libxmltokfrom 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |