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CVE-2026-73194 is a heap out-of-bounds write in the SQL placeholder preparser in DBI for Perl before version 1.652. The preparser allocates output space assuming each input character can expand to no more than the width of a normal numbered placeholder. A numeric placeholder is parsed into the binder counter without range validation. An oversized value can cause integer wraparound to a negative counter; subsequent question-mark placeholders are expanded into longer negative numbered placeholders than the allocation accounts for. The existing maximum-placeholder check does not reject the negative counter. The affected path is the conversion to :pN-style placeholders; the question-mark and %s return styles reject an unexpected parsed sequence and are not affected.
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A network-reachable, low-complexity vulnerability with no required privileges or user interaction, affecting confidentiality and availability according to the listed CVSS v3 vector. It is associated with CWE-787, an out-of-bounds write weakness, and is addressed by Alma Linux advisory ALSA-2026-70753.
A heap out-of-bounds write in Perl DBI caused by an unvalidated numeric placeholder, affecting the perl-DBI package on Red Hat Enterprise Linux 8. Red Hat rated the associated update Important.
A heap out-of-bounds write vulnerability in Perl DBI caused by an unvalidated numeric placeholder. It affects the perl-DBI package on Red Hat Enterprise Linux 9 systems covered by RHSA-2026:71422.
A CWE-787 out-of-bounds write vulnerability affecting the Alma Linux 8 perl-DBI package, as identified by the referenced Alma Linux local security check.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.