# CVE-2024-47076: libcupsfilters's cfGetPrinterAttributes5 does not validate IPP attributes returned from an IPP server

> Attackers can inject malicious data via unsanitized IPP attributes, potentially compromising the CUPS printing system.

- **Severity:** High 8.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/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:** Yes
- **Published:** 26 Sep 2024
- **Updated:** 3 Nov 2025
- **Also known as:** CLSA-2025-1745586793, CVE-2024-47177, DEBIAN-CVE-2024-47076, UBUNTU-CVE-2024-47076, USN-7044-1

## What is CVE-2024-47076?

CVE-2024-47076 is a high-severity vulnerability in OpenPrinting libcupsfilters, published on 26 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

CUPS is a standards-based, open-source printing system, and `libcupsfilters` contains the code of the filters of the former `cups-filters` package as library functions to be used for the data format conversion tasks needed in Printer Applications. The `cfGetPrinterAttributes5` function in `libcupsfilters` does not sanitize IPP attributes returned from an IPP server. When these IPP attributes are used, for instance, to generate a PPD file, this can lead to attacker controlled data to be provided to the rest of the CUPS system.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2024-47076?

It affects 1 product.


Products: Openprinting Libcupsfilters.

## How do I fix CVE-2024-47076?

Apply the vendor's patch.

## Is CVE-2024-47076 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-47076 exists.

Public exploit code:

- CUPS IPP Attributes LAN Remote Code Execution (metasploit)
- Linux ve Unix sistemlerinizin CVE-2024-47076 açığından etkilenip etkilenmediğini bu script ile öğrenebilirsiniz. (github_poc): https://github.com/mutkus/CVE-2024-47076

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-47076 and fix it if it is affected.

What it is: CVE-2024-47076 is a high-severity vulnerability in OpenPrinting libcupsfilters, published on 26 Sep 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-2024-47076 exists.

Affected product: OpenPrinting libcupsfilters. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2024-47076/ (Markdown: https://insights.sbomify.com/CVE-2024-47076/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-47076
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-47076
- OSV: https://osv.dev/vulnerability/CVE-2024-47076

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-47076/
Summaries are generated and may contain mistakes; the official description above is the record.