CVE-2026-0989
3.7
LOW
CVSS 3.1
EPSS 0.42%
Description
A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This may lead to stack exhaustion and application crashes, creating a denial-of-service risk.
How to fix CVE-2026-0989
To remediate CVE-2026-0989, upgrade the affected package to a fixed version below.
- —upgrade to 2.9.10+dfsg-6.7+deb11u10 or later
Is CVE-2026-0989 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.9.10+dfsg-6.7+deb11u10
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |