Vulnerability in Red Hat Enterprise Linux 10
CVE-2026-1757
A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allocated for user input is not properly released under certain conditions. When a user submits input consisting only of whitespace, the program skips command execution but fails to free the allocated buffer. Repeating this action causes memory to continuously accumulate. Over time, this can exhaust system memory and terminate the xmllint process, creating a denial-of-service condition on the local system.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (9.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2026:7519 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2026-1757 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- gitlab.gnome.org/GNOME/libxml2/-/issues/1009
Frequently asked questions
- What is CVE-2026-1757?
- CVE-2026-1757 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 6.2/10. Published 2026-02-02.
- How severe is CVE-2026-1757?
- Medium severity. CVSS v3 base score is 6.2 out of 10.