CVE-2021-3518
Nokogiri Implements libxml2 version vulnerable to use-after-free
8.8
HIGH
CVSS 3.1
EPSS 0.25%
Description
There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.
How to fix CVE-2021-3518
To remediate CVE-2021-3518, upgrade the affected package to a fixed version below.
- —upgrade to 2.9.9-r5 or later
- —upgrade to 2.9.10+dfsg-6.6 or later
- —upgrade to 1.11.4 or later
Is CVE-2021-3518 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.9.9-r5
- from 0, < 2.9.10+dfsg-6.6
- from 0, < 1.11.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |