# CVE-2026-3856: IBM Db2 Recovery Expert Missing Integrity Check

> An attacker can modify or corrupt data in IBM Db2 Recovery Expert due to insecure integrity verification during transmission.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:** 17 Mar 2026
- **Updated:** 18 Mar 2026
- **Also known as:** GHSA-c57j-h24c-r8gw, ROOT-OS-UBUNTU-2204-CVE-2026-3856

## What is CVE-2026-3856?

CVE-2026-3856 is a medium-severity vulnerability in IBM Db2 Recovery Expert, published on 17 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

IBM Db2 Recovery Expert for Linux, UNIX and Windows 5.5 IF 2 could allow an attacker to modify or corrupt data due to an insecure mechanism used for verifying the integrity of the data during transmission.

Weakness: CWE-353 (Missing Support for Integrity Check)

## Which versions are affected by CVE-2026-3856?

It affects 1 product.


Products: Ibm Db2 Recovery Expert.

## How do I fix CVE-2026-3856?

Apply the vendor's patch.

## Is CVE-2026-3856 being exploited?

There is no known exploitation of CVE-2026-3856 in the wild and no public exploit code.

## Other vulnerabilities in IBM Db2 Recovery Expert

- [CVE-2025-27900](https://insights.sbomify.com/CVE-2025-27900/): Multiple vulnerabilities in IBM Java SDK affecting Db2 Recovery Expert for Linux, Unix and Windows (medium 6.8)
- [CVE-2025-27901](https://insights.sbomify.com/CVE-2025-27901/): Multiple vulnerabilities in IBM Java SDK affecting Db2 Recovery Expert for Linux, Unix and Windows (medium 6.5)
- [CVE-2025-27904](https://insights.sbomify.com/CVE-2025-27904/): Multiple vulnerabilities in IBM Java SDK affecting Db2 Recovery Expert for Linux, Unix and Windows (medium 6.5)
- [CVE-2025-27898](https://insights.sbomify.com/CVE-2025-27898/): Multiple vulnerabilities in IBM Java SDK affecting Db2 Recovery Expert for Linux, Unix and Windows (medium 6.3)
- [CVE-2025-27903](https://insights.sbomify.com/CVE-2025-27903/): Multiple vulnerabilities in IBM Java SDK affecting Db2 Recovery Expert for Linux, Unix and Windows (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3856 and fix it if it is affected.

What it is: CVE-2026-3856 is a medium-severity vulnerability in IBM Db2 Recovery Expert, published on 17 Mar 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-2026-3856 in the wild and no public exploit code.

Affected product: IBM Db2 Recovery Expert. 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-2026-3856/ (Markdown: https://insights.sbomify.com/CVE-2026-3856/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3856
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3856
- OSV: https://osv.dev/vulnerability/CVE-2026-3856

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-3856/
Summaries are generated and may contain mistakes; the official description above is the record.