CVE-2025-48056 Hubble CLI vulnerable to character injection
Attackers can inject control characters into Hubble CLI output to hide logs or disrupt the terminal, requiring Layer 7 visibility monitoring.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-48056?
CVE-2025-48056 is a medium-severity vulnerability in cilium hubble, published on 20 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Hubble is a fully distributed networking and security observability platform for cloud native workloads. Prior to version 1.17.2, a network attacker could inject malicious control characters into Hubble CLI terminal output, potentially leading to loss of integrity and manipulation of the output. This could be leveraged to conceal log entries, rewrite output, or even make the terminal temporarily unusable. Exploitation of this attack would require the victim to be monitoring Kafka traffic using Layer 7 Protocol Visibility at the time of the attack. The issue is patched in Hubble CLI v1.17.2. Hubble CLI users who are unable to upgrade can direct their Hubble flows to a log file and inspect the output within a text editor.
Weakness: CWE-74
Which versions are affected by CVE-2025-48056?
3 open source packages ship an affected version, including github.com/cilium/hubble.
| Package | Affected | Fixed in |
|---|---|---|
github.com/cilium/hubble Go | All versions | 1.17.2 |
github.com/cilium/hubble Go | All versions | 1.17.2 |
github.com/cilium/hubble Go | All versions | 1.17.2 |
How do I fix CVE-2025-48056?
Upgrade github.com/cilium/hubble to 1.17.2 or later.
Is CVE-2025-48056 being exploited?
There is no known exploitation of CVE-2025-48056 in the wild and no public exploit code.
Sources
Also known as GHSA-274q-79q9-52j7, GO-2025-3700, MINI-5x3m-g792-qq36, MINI-877v-gq6h-42c6.