# CVE-2006-10003

## Summary

- **CVE ID:** CVE-2006-10003
- **Severity:** HIGH
- **CVSS Score:** 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
- **CWE:** CWE-193, CWE-122
- **Published:** Mar 19, 2026
- **Last Modified:** Jul 15, 2026

## 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

## Affected Products

- TODDR — XML::Parser (0)

## References

- [CNA](https://rt.cpan.org/Ticket/Display.html?id=19860)
- [CNA](https://github.com/cpan-authors/XML-Parser/issues/39)
- [CNA](https://github.com/cpan-authors/XML-Parser/commit/3eb9cc95420fa0c3f76947c4708962546bf27cfd.patch)
- [CVE](http://www.openwall.com/lists/oss-security/2026/03/19/2)
- [CVE](https://lists.debian.org/debian-lts-announce/2026/04/msg00002.html)
- [redhat-SADP](https://access.redhat.com/security/cve/CVE-2006-10003)
- [redhat-SADP](https://bugzilla.redhat.com/show_bug.cgi?id=2448999)
- [redhat-SADP](https://security.access.redhat.com/data/csaf/v2/vex/2006/cve-2006-10003.json)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:8578)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:9110)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:7680)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:7681)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:8609)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:8608)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:8610)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:8577)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:9246)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:9258)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:9259)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:9605)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:7679)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.55%
- **EPSS Percentile:** 44.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._