CVE-2006-10003 | XML::Parser versions through 2.47 for Perl has an off-by-one… | CVSS 9.8 CRITICAL

Description

XML::Parser versions through 2.47 for Perl has an off-by-one heap buffer overflow in st_serial_stack. In the case (stackptr == stacksize - 1), the stack will NOT be expanded. Then the new value will be written at location (++stackptr), which equals stacksize and therefore falls just outside the allocated buffer. The bug can be observed when parsing an XML file with very deep element nesting

Metadata

CVE ID: CVE-2006-10003
State: PUBLISHED
Assigner: CPANSec
Reserved: 2026-03-16 22:52 UTC
Published: 2026-03-19 11:08 UTC
Last updated: 2026-04-04 08:11 UTC
Primary CWE: CWE-193
CWE-193 Off-by-one Error
Vendor / Product: TODDR / XML::Parser
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
TODDR	XML::Parser	—	0 ≤ 2.47

Weakness (CWE)

CWE	Source	Description
CWE-122	cna	CWE-122 Heap-based Buffer Overflow
CWE-193	cna	CWE-193 Off-by-one Error

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (3)