Heap-based buffer overflow in TODDR XML::Parser
Priority MEDIUM 50CWE-122Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 17 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-122 and the CVSS impact.
Summary
XML::Parser versions through 2.45 for Perl could overflow the pre-allocated buffer size cause a heap corruption (double free or corruption) and crashes. A :utf8 PerlIO layer, parse_stream() in Expat.xs could overflow the XML input buffer because Perl's read() returns decoded characters while SvPV() gives back multi-byte UTF-8 bytes that can exceed the pre-allocated buffer size. This can cause heap corruption (double free or corruption) and crashes.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00628 50th percentileScored 2026-11-07
Fix Partial Red Hat: 13 advisoriesRed Hat: 17 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Red Hat 13 advisories
- RHSA-2026:9605 Released 2026-04-22 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream EUS (v.9.6) perl-XML-Parser-2.46-9.el9_6.1
- RHSA-2026:9259 Released 2026-04-21 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream EUS (v.9.4) perl-XML-Parser-2.46-9.el9_4.1
- RHSA-2026:9258 Released 2026-04-21 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) perl-XML-Parser-2.46-9.el9_2.1
Show 10 more Red Hat advisories
- RHSA-2026:9246 Released 2026-04-21 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) perl-XML-Parser-2.46-9.el9_0.1
- RHSA-2026:9110 Released 2026-04-20 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream EUS (v. 10.0) perl-XML-Parser-2.47-6.el10_0.1
- RHSA-2026:8610 Released 2026-04-16 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream AUS (v.8.6) perl-XML-Parser-2.44-11.el8_6.1
- Red Hat Enterprise Linux AppStream E4S (v.8.6) perl-XML-Parser-2.44-11.el8_6.1
- Red Hat Enterprise Linux AppStream TUS (v.8.6) perl-XML-Parser-2.44-11.el8_6.1
- RHSA-2026:8608 Released 2026-04-16 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) perl-XML-Parser-2.44-11.el8_4.1
- Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) perl-XML-Parser-2.44-11.el8_4.1
- RHSA-2026:8609 Released 2026-04-16 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) perl-XML-Parser-2.44-11.el8_2.1
- RHSA-2026:8578 Released 2026-04-16 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux Server (v. 7 ELS) perl-XML-Parser-2.41-10.el7_9.1
- RHSA-2026:8577 Released 2026-04-16 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream E4S (v.8.8) perl-XML-Parser-2.44-11.el8_8.1
- Red Hat Enterprise Linux AppStream TUS (v.8.8) perl-XML-Parser-2.44-11.el8_8.1
- RHSA-2026:7679 Released 2026-04-13 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream (v. 9) perl-XML-Parser-2.46-9.1.el9_7
- RHSA-2026:7681 Released 2026-04-13 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream (v. 8) perl-XML-Parser-2.44-12.el8_10
- RHSA-2026:7680 Released 2026-04-13 · Red Hat rating Importantperl-XML-Parser security update
- Red Hat Enterprise Linux AppStream (v. 10) perl-XML-Parser-2.47-6.1.el10_1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix yet |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:7680 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:7681 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:7679 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2026:8609 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2026:8608 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2026:8610 |
| Red Hat Enterprise Linux AppStream E4S (v.8.6) | Fixed | RHSA-2026:8610 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2026:8577 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2026:9246 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:9258 |
| Red Hat Enterprise Linux AppStream EUS (v. 10.0) | Fixed | RHSA-2026:9110 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2026:9259 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:9605 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) | Fixed | RHSA-2026:8608 |
| Red Hat Enterprise Linux AppStream TUS (v.8.6) | Fixed | RHSA-2026:8610 |
| Red Hat Enterprise Linux AppStream TUS (v.8.8) | Fixed | RHSA-2026:8577 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2026:8578 |
Timeline
- 2026-10-02 Threatist record created from CVE-2006-10002
- 2026-10-03 Alias added: GHSA-h943-hrx6-86cq
- 2026-11-05 EPSS moved to the 50th–90th percentile
References
Patch 2
More TODDR Xml vulnerabilities
- TI-2006-06994 Heap-based buffer overflow in TODDR XML::Parser CVSS 3.1CRITICAL 9.8
Sources
- CVE-2006-10002 · CVE Program
- CVE-2006-10002 · NVD
- FIRST EPSS
- GHSA-h943-hrx6-86cq · GitHub Advisory Database · CC BY 4.0
- CVE-2006-10002 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences