CVE-2006-10003
Critical · CVSS 9.8XML::Parser (Perl) — Off-by-one heap buffer overflow
- CVSS
- 9.8
- nvd
- EPSS
- —
- KEV
- No
- Class
- other
- CWE-122, CWE-193, CWE-193
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
Search profile — drives PoC discovery
Symbols st_serial_stackstackptrstacksizeXML::ParserExpat.xsXML_Parser
Keywords CVE-2006-10003XML-Parseroff-by-oneheap buffer overflowst_serial_stackdeep element nestingPerl XML parserstackptr stacksize
Versions: through 2.47
References
- https://github.com/cpan-authors/XML-Parser/commit/3eb9cc95420fa0c3f76947c4708962546bf27cfd.patch
- https://github.com/cpan-authors/XML-Parser/issues/39
- https://rt.cpan.org/Ticket/Display.html?id=19860
- http://www.openwall.com/lists/oss-security/2026/03/19/2
- https://lists.debian.org/debian-lts-announce/2026/04/msg00002.html
- https://access.redhat.com/errata/RHSA-2026:7679
- https://access.redhat.com/errata/RHSA-2026:7680
- https://access.redhat.com/errata/RHSA-2026:7681
- https://access.redhat.com/errata/RHSA-2026:8577
- https://access.redhat.com/errata/RHSA-2026:8578
- https://access.redhat.com/errata/RHSA-2026:8608
- https://access.redhat.com/errata/RHSA-2026:8609
Status: enriched · ingested 2026-06-30T06:00:22.000Z · profiled 2026-06-30T18:10:12.581Z