# CVE-2024-53441: Bit flip attack vulnerability in cookie-encrypter

> Attackers can manipulate encrypted cookies via bit flipping due to weak cryptography in the cookie-encrypter library.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Dec 2024
- **Updated:** 11 Dec 2024
- **Also known as:** GHSA-h63v-hw6g-x8hp

## What is CVE-2024-53441?

CVE-2024-53441 is a critical vulnerability in n/a, published on 9 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue in the index.js decryptCookie function of cookie-encrypter v1.0.1 allows attackers to execute a bit flipping attack.

Weakness: CWE-327 (Use of a Broken or Risky Cryptographic Algorithm)

## Which versions are affected by CVE-2024-53441?

2 open source packages ship an affected version, including cookie-encrypter.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `cookie-encrypter` | npm | All versions to 1.0.1 | None |
| `cookie-encrypter` | npm | All versions to 1.0.1 | None |

## How do I fix CVE-2024-53441?

No fix has been published for CVE-2024-53441 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-53441 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-53441 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-53441 and fix it if it is affected.

What it is: CVE-2024-53441 is a critical vulnerability in n/a, published on 9 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-53441 exists.

Affected packages and fixed versions:
- cookie-encrypter (npm): affected all versions up to 1.0.1; no fix listed
- cookie-encrypter (npm): affected all versions up to 1.0.1; no fix listed

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-2024-53441/ (Markdown: https://insights.sbomify.com/CVE-2024-53441/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-53441
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-53441
- OSV: https://osv.dev/vulnerability/CVE-2024-53441

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-53441/
Summaries are generated and may contain mistakes; the official description above is the record.