PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-10879 HMBRAND CVE debrief

A critical vulnerability was discovered in DBI versions before 1.648 for Perl, which can lead to a heap overflow when preparsing SQL statements with more than 9 binders. The preparse method expands SQL placeholder characters to numbered binders of the form :pN, but only allocates three characters per binder in the buffer. Placeholders 10-99 require four characters, 100-999 require five characters, et cetera. This vulnerability has a CVSS score of 9.8 and is classified as CRITICAL.

Vendor
HMBRAND
Product
DBI
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-05
Original CVE updated
2026-06-10
Advisory published
2026-06-05
Advisory updated
2026-06-10

Who should care

Users of Perl's DBI module, especially those who handle SQL statements with multiple binders, should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by the preparse method's insufficient buffer allocation for binders. When the number of binders exceeds 9, the buffer overflow occurs, leading to a heap overflow.

Defensive priority

high

Recommended defensive actions

  • Upgrade to DBI version 1.648 or later.
  • Apply the patch provided by the vendor [ref-4].
  • Refer to the release notes for DBI version 1.648 [ref-5].

Evidence notes

The vulnerability was reported and analyzed by the Perl DBI community and security researchers [ref-6].

Official resources

CVE-2026-10879 was published on 2026-06-05T15:16:46.817Z and modified on 2026-06-10T15:02:24.007Z.