CVE-2023-39615

Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

1.1% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-25)

CWE

CWE-119

Published

2023-08-29

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• xmlsoft:libxml2

References

• https://gitlab.gnome.org/GNOME/libxml2/-/issues/535
• https://gitlab.gnome.org/GNOME/libxml2/-/issues/535
• https://lists.debian.org/debian-lts-announce/2025/02/msg00028.html
• https://cert-portal.siemens.com/productcert/html/ssa-341067.html
• https://cert-portal.siemens.com/productcert/html/ssa-398330.html

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