CVE-2017-16931

parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.

CVSS 3.0

9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

4.6% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-25)

CWE

CWE-119

Published

2017-11-23

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• xmlsoft:libxml2

References

• http://xmlsoft.org/news.html
• https://bugzilla.gnome.org/show_bug.cgi?id=766956
• https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3
• https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html
• https://www.oracle.com//security-alerts/cpujul2021.html

Check your stackJSON