# CVE-2026-20884: Integer overflow in LibRaw

> An integer overflow in LibRaw's deflate_dng_load_raw function allows attackers to trigger a heap buffer overflow via a malicious file, potentially leading to code execution.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 7 Apr 2026
- **Updated:** 13 Apr 2026
- **Also known as:** AZL-82949, DEBIAN-CVE-2026-20884, ECHO-e74f-830c-cd04, GHSA-ghvx-hc97-wc4v, JLSEC-2026-1113, UBUNTU-CVE-2026-20884

## What is CVE-2026-20884?

CVE-2026-20884 is a high-severity vulnerability in Libraw Libraw, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An integer overflow vulnerability exists in the deflate_dng_load_raw functionality of LibRaw Commit 8dc68e2. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2026-20884?

It affects 1 product.


Products: Libraw Libraw.

## How do I fix CVE-2026-20884?

Upgrade to a fixed version.

## Is CVE-2026-20884 being exploited?

There is no known exploitation of CVE-2026-20884 in the wild and no public exploit code.

## Other vulnerabilities in Libraw Libraw

- [CVE-2026-20889](https://insights.sbomify.com/CVE-2026-20889/): Memory corruption in LibRaw (critical 9.8)
- [CVE-2026-20911](https://insights.sbomify.com/CVE-2026-20911/): Memory corruption in LibRaw (critical 9.8)
- [CVE-2026-21413](https://insights.sbomify.com/CVE-2026-21413/): Memory corruption in LibRaw (critical 9.8)
- [CVE-2015-8366](https://insights.sbomify.com/CVE-2015-8366/): Integer overflow in n/a (critical 9.8)
- [CVE-2015-8367](https://insights.sbomify.com/CVE-2015-8367/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-20884 and fix it if it is affected.

What it is: CVE-2026-20884 is a high-severity vulnerability in Libraw Libraw, published on 7 Apr 2026. 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-2026-20884 in the wild and no public exploit code.

Affected product: Libraw Libraw. 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-2026-20884/ (Markdown: https://insights.sbomify.com/CVE-2026-20884/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-20884
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-20884
- OSV: https://osv.dev/vulnerability/CVE-2026-20884

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-20884/
Summaries are generated and may contain mistakes; the official description above is the record.