# CVE-2023-29471: Lightbend Alpakka Kafka logs credentials on debug level

> Lightbend Alpakka Kafka logs cleartext credentials in debug mode, exposing sensitive data to anyone with log access.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 27 Apr 2023
- **Updated:** 31 Jan 2025
- **Also known as:** GHSA-55vq-xpjf-r2xc

## What is CVE-2023-29471?

CVE-2023-29471 is a medium-severity vulnerability in n/a, published on 27 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Lightbend Alpakka Kafka before 5.0.0 logs its configuration as debug information, and thus log files may contain credentials (if plain cleartext login is configured). This occurs in akka.kafka.internal.KafkaConsumerActor.

Weakness: CWE-312 (Cleartext Storage of Sensitive Information)

## Which versions are affected by CVE-2023-29471?

8 open source packages ship an affected version, including com.typesafe.akka:akka-stream-kafka_2.11, com.typesafe.akka:akka-stream-kafka_2.12 and com.typesafe.akka:akka-stream-kafka_2.13. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `com.typesafe.akka:akka-stream-kafka_2.11` | Maven | All versions | None |
| `com.typesafe.akka:akka-stream-kafka_2.11` | Maven | All versions | None |
| `com.typesafe.akka:akka-stream-kafka_2.12` | Maven | All versions | 4.0.2 |
| `com.typesafe.akka:akka-stream-kafka_2.12` | Maven | All versions | 4.0.2 |
| `com.typesafe.akka:akka-stream-kafka_2.13` | Maven | All versions | 4.0.2 |
| `com.typesafe.akka:akka-stream-kafka_2.13` | Maven | All versions | 4.0.2 |
| `com.typesafe.akka:akka-stream-kafka_3` | Maven | All versions | 4.0.2 |
| `com.typesafe.akka:akka-stream-kafka_3` | Maven | All versions | 4.0.2 |

Products: Lightbend Alpakka Kafka.

## How do I fix CVE-2023-29471?

Upgrade to a fixed version.

## Is CVE-2023-29471 being exploited?

There is no known exploitation of CVE-2023-29471 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-29471 and fix it if it is affected.

What it is: CVE-2023-29471 is a medium-severity vulnerability in n/a, published on 27 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-29471 in the wild and no public exploit code.

Affected packages and fixed versions:
- com.typesafe.akka:akka-stream-kafka_2.11 (Maven): affected all versions; no fix listed
- com.typesafe.akka:akka-stream-kafka_2.11 (Maven): affected all versions; no fix listed
- com.typesafe.akka:akka-stream-kafka_2.12 (Maven): affected all versions; fixed in 4.0.2
- com.typesafe.akka:akka-stream-kafka_2.12 (Maven): affected all versions; fixed in 4.0.2
- com.typesafe.akka:akka-stream-kafka_2.13 (Maven): affected all versions; fixed in 4.0.2
- com.typesafe.akka:akka-stream-kafka_2.13 (Maven): affected all versions; fixed in 4.0.2
- com.typesafe.akka:akka-stream-kafka_3 (Maven): affected all versions; fixed in 4.0.2
- com.typesafe.akka:akka-stream-kafka_3 (Maven): affected all versions; fixed in 4.0.2

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-2023-29471/ (Markdown: https://insights.sbomify.com/CVE-2023-29471/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-29471
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-29471
- OSV: https://osv.dev/vulnerability/CVE-2023-29471

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-29471/
Summaries are generated and may contain mistakes; the official description above is the record.