CVE-2006-10003: XML::Parser versions through 2.47 for Perl has an off-by-one heap buffer overflow in st_serial_stack. In the

Q: How do I fix CVE-2006-10003?

xml\: upgrade to 2.48. Exact commands for each OS are on this page.

Q: Is CVE-2006-10003 being exploited?

CVE-2006-10003 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2006-10003 affect?

CVE-2006-10003 affects xml\. Severity is critical (CVSS 9.8). 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), whi

Q: How urgent is CVE-2006-10003?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2006-10003 is a critical-severity flaw (CVSS 9.8) affecting xml\. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-122, CWE-193
Published	2026-03-19
Last modified	2026-07-15

Publisher (CNA): CPANSec · Vendor: toddr

Last updated 2026-07-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-19 12:16 UTCPublished CVE record published
2026-07-15 02:16 UTCUpdated Record last modified

toddr xml\ UPGRADE

Affected: < 2.48

Fixed in: 2.48

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xml || rpm -q xml || xml --version

2. UPGRADE to 2.48 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xml

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xml

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2006-10003?

xml\: upgrade to 2.48. Exact commands for each OS are on this page.

Is CVE-2006-10003 being exploited?

CVE-2006-10003 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2006-10003 affect?

CVE-2006-10003 affects xml\. Severity is critical (CVSS 9.8). 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), whi

How urgent is CVE-2006-10003?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Perl vulnerabilities

Related CVEs

CVE-2006-10002 HIGH 7.5 UPGRADE XML::Parser versions through 2.45 for Perl could overflow the pre-allocated buffer size cause a heap corruptio

References

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