dbcve.org
DbiApplication · Perl

CVE-2026-9698

CRITICAL · 9.8 CVSS v3.1 Published 2026-06-09
Fix available
A fix is available. Upgrade to 1.648 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
DBI versions before 1.648 for Perl saved errors in a limited-sized buffer. Error messages that were returned when RaiseError, PrintError or HandleError were set were written to a 200-byte buffer without a length limit. Attackers that can influence the error text in an application can trigger a buffer overflow.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

The DBI module for Perl versions before 1.648 contained a buffer overflow vulnerability in its error handling mechanism. When error handlers (RaiseError, PrintError, or HandleError) were enabled, error messages were written to a fixed 200-byte buffer without proper length validation, allowing attackers who can influence error text to overflow the buffer.

MitigationUpgrade the Perl DBI module to version 1.648 or later to obtain the patched version with proper buffer handling.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
DbiApplication
Affected:< 1.648

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check installed DBI version
    Run `perl -MDBI -e 'print $DBI::VERSION'` or from within Perl: `use DBI; print $DBI::VERSION;`
    Affected if The version number returned is less than 1.648 (for example, 1.647, 1.646, etc.)
  2. Locate DBI-using Perl scripts
    Search for files containing `use DBI` or `require DBI` in your codebase using `grep -r "use DBI" /path/to/code` or similar tools
    Affected if Any Perl application uses the DBI module
  3. Detect RaiseError configuration
    Search scripts for `RaiseError` set to 1 or true, such as `RaiseError => 1` or `$dbh->{RaiseError} = 1;`
    Affected if RaiseError is enabled in any DBI handle configuration
  4. Detect PrintError configuration
    Search scripts for `PrintError` set to 1 or true, such as `PrintError => 1` or `$dbh->{PrintError} = 1;`
    Affected if PrintError is enabled in any DBI handle configuration
  5. Detect HandleError configuration
    Search scripts for `HandleError` being defined, such as `HandleError =>` with a code reference
    Affected if HandleError is defined in any DBI handle configuration

You are affected if your DBI version is below 1.648 AND any of RaiseError, PrintError, or HandleError error handling options are enabled in your Perl applications using DBI.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 1.648 or later
Fixed in 1.648
Vendor patch github.com →
Interim mitigation

Upgrade the Perl DBI module to version 1.648 or later to obtain the patched version with proper buffer handling.

Recommended fix High confidence

DBI 1.648

  1. Check current DBI version: perl -MDBI -e 'print $DBI::VERSION'
  2. Upgrade DBI using CPAN module: cpan -i DBI or cpanm DBI
  3. Alternatively, use system package manager: apt-get install libdbi-perl (Debian/Ubuntu) or yum install perl-DBI (RHEL/CentOS)
  4. Verify the upgrade: perl -MDBI -e 'print $DBI::VERSION' and confirm version is 1.648 or higher
  5. If using a packaged application, restart any Perl applications using DBI to ensure the new library is loaded

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Dbi Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-9698 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data