Common Weakness Enumeration
CWE-193
AllowedOff-by-one Error
Abstraction: Base · Status: Draft
A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.
131 vulnerabilities reference this CWE, most recent first.
CVE-2006-10003 (GCVE-0-2006-10003)
Vulnerability from cvelistv5 – Published: 2026-03-19 11:08 – Updated: 2026-07-15 01:28
VLAI
EPSS
VEX
Title
XML::Parser versions through 2.47 for Perl has an off-by-one heap buffer overflow in st_serial_stack
Summary
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
Severity
9.8 (Critical)
8.8 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-19 17:08 UTC
Assigner
CPANSec
CNA
References
21 references
Impacted products
19 products
| Vendor | Product | Version | |
|---|---|---|---|
| TODDR | XML::Parser |
Affected:
0 , ≤ 2.47
(custom)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:2.47-6.1.el10_1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:2.47-6.el10_0.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
Unaffected:
0:2.41-10.el7_9.1 , < *
(rpm)
cpe:/o:redhat:rhel_els:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:2.44-12.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support |
Unaffected:
0:2.44-11.el8_2.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.2 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:2.44-11.el8_4.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:2.44-11.el8_4.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:2.44-11.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service |
Unaffected:
0:2.44-11.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions |
Unaffected:
0:2.44-11.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:2.44-11.el8_8.1 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:2.44-11.el8_8.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:2.46-9.1.el9_7 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions |
Unaffected:
0:2.46-9.el9_0.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.0 |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:2.46-9.el9_2.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:2.46-9.el9_4.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:2.46-9.el9_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
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"descriptions": [
{
"cweId": "CWE-122",
"description": "CWE-122 Heap-based Buffer Overflow",
"lang": "en",
"type": "CWE"
}
]
}
],
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"references": [
{
"tags": [
"issue-tracking"
],
"url": "https://rt.cpan.org/Ticket/Display.html?id=19860"
},
{
"tags": [
"issue-tracking"
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"url": "https://github.com/cpan-authors/XML-Parser/issues/39"
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{
"tags": [
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"url": "https://github.com/cpan-authors/XML-Parser/commit/3eb9cc95420fa0c3f76947c4708962546bf27cfd.patch"
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],
"solutions": [
{
"lang": "en",
"value": "Apply the patch that has been publicly available since 2006-06-13 or upgrade to version 2.48 or later when it is released."
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"source": {
"discovery": "UNKNOWN"
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"timeline": [
{
"lang": "en",
"time": "2006-06-13T00:00:00.000Z",
"value": "Issue logged and patch provided in Request Tracker for XML::Parser"
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{
"lang": "en",
"time": "2019-09-23T00:00:00.000Z",
"value": "Issue migrated to github issue tracker"
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{
"lang": "en",
"time": "2019-09-24T00:00:00.000Z",
"value": "Patch provided in github issue tracker"
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{
"lang": "en",
"time": "2026-03-16T00:00:00.000Z",
"value": "PR created and commit merged to git repo"
}
],
"title": "XML::Parser versions through 2.47 for Perl has an off-by-one heap buffer overflow in st_serial_stack",
"workarounds": [
{
"lang": "en",
"value": "Apply the patch that has been publicly available since 2006-06-13."
}
],
"x_generator": {
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"cveMetadata": {
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"assignerShortName": "CPANSec",
"cveId": "CVE-2006-10003",
"datePublished": "2026-03-19T11:08:04.341Z",
"dateReserved": "2026-03-16T22:52:39.890Z",
"dateUpdated": "2026-07-15T01:28:08.168Z",
"state": "PUBLISHED"
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"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Implementation
When copying character arrays or using character manipulation methods, the correct size parameter must be used to account for the null terminator that needs to be added at the end of the array. Some examples of functions susceptible to this weakness in C include strcpy(), strncpy(), strcat(), strncat(), printf(), sprintf(), scanf() and sscanf().
No CAPEC attack patterns related to this CWE.