# CVE-2023-26108: @nestjs/core vulnerable to Information Exposure via StreamableFile pipe

> Attackers can keep file streams open by canceling requests, potentially leading to resource exhaustion or information exposure in NestJS applications.

- **Severity:** Low 3.7 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Mar 2023
- **Updated:** 5 Mar 2025
- **Also known as:** GHSA-4jpv-8r57-pv7j

## What is CVE-2023-26108?

CVE-2023-26108 is a low-severity vulnerability in @nestjs/core, published on 6 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Versions of the package @nestjs/core before 9.0.5 are vulnerable to Information Exposure via the StreamableFile pipe. Exploiting this vulnerability is possible when the client cancels a request while it is streaming a StreamableFile, the stream wrapped by the StreamableFile will be kept open.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2023-26108?

2 open source packages ship an affected version, including @nestjs/core. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `@nestjs/core` | npm | All versions | 9.0.5 |
| `@nestjs/core` | npm | All versions | 9.0.5 |

Products: Nestjs Nest.

## How do I fix CVE-2023-26108?

Upgrade @nestjs/core to 9.0.5 or later.

## Is CVE-2023-26108 being exploited?

There is no known exploitation of CVE-2023-26108 in the wild and no public exploit code.

## Other vulnerabilities in @nestjs/core

- [CVE-2026-33011](https://insights.sbomify.com/CVE-2026-33011/): Nest Fastify HEAD Request Middleware Bypass (high 8.7)
- [CVE-2026-2293](https://insights.sbomify.com/CVE-2026-2293/): NestJS 11.1.13 - Lack of data validation allowing authentication/authorization bypass (high 8.2)
- [CVE-2026-40879](https://insights.sbomify.com/CVE-2026-40879/): Nest: DoS via Recursive handleData in JsonSocket (TCP Transport) (high 7.5)
- [CVE-2025-69211](https://insights.sbomify.com/CVE-2025-69211/): Nest has a Fastify URL Encoding Middleware Bypass (TOCTOU) (medium 6.9)
- [CVE-2026-35515](https://insights.sbomify.com/CVE-2026-35515/): @nestjs/core Improperly Neutralizes Special Elements in Output Used by a Downstream Component ('Injection') (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-26108 and fix it if it is affected.

What it is: CVE-2023-26108 is a low-severity vulnerability in @nestjs/core, published on 6 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-26108 in the wild and no public exploit code.

Affected packages and fixed versions:
- @nestjs/core (npm): affected all versions; fixed in 9.0.5
- @nestjs/core (npm): affected all versions; fixed in 9.0.5

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-26108/ (Markdown: https://insights.sbomify.com/CVE-2023-26108/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-26108
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-26108
- OSV: https://osv.dev/vulnerability/CVE-2023-26108

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-26108/
Summaries are generated and may contain mistakes; the official description above is the record.