CVE-2024-56528: This vulnerability affects Snowplow Collector 3.x before 3.3.0 (unless it’s set up behind a reverse proxy that

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HIGH 7.5REMOTEUPGRADE

CVE-2024-56528 is a high-severity flaw (CVSS 7.5) affecting stream collector. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

This vulnerability affects Snowplow Collector 3.x before 3.3.0 (unless it’s set up behind a reverse proxy that establishes payload limits). It involves sending very large payloads to the Collector and can render it unresponsive to the rest of the requests. As a result, data would not enter the pipeline and would be potentially lost.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-400
Published	2025-04-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: snowplow

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-04-03 21:15 UTCPublished CVE record published
2026-06-17 08:12 UTCUpdated Record last modified

snowplow stream collector UPGRADE

Affected: >= 3.0.0 and < 3.3.0

Fixed in: 3.3.0

Safe to downgrade to: a release before 3.0.0

1. Check installed version

apt-cache policy stream-collector || rpm -q stream-collector || stream-collector --version

2. UPGRADE to 3.3.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade stream-collector

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade stream-collector

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.0.0 (Debian / Ubuntu)

apt-cache madison stream-collector sudo apt install stream-collector=<VERSION_BEFORE_3.0.0> sudo apt-mark hold stream-collector

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list stream-collector sudo dnf downgrade stream-collector-<VERSION_BEFORE_3.0.0> sudo dnf versionlock add stream-collector

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-56528?

stream collector: upgrade to 3.3.0. Exact commands for each OS are on this page.

Is CVE-2024-56528 being exploited?

CVE-2024-56528 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-56528 affect?

CVE-2024-56528 affects stream collector. Severity is high (CVSS 7.5). This vulnerability affects Snowplow Collector 3.x before 3.3.0 (unless it’s set up behind a reverse proxy that establishes payload limits). It involves sending very large payloads to the Collector and can render it unresponsive to the rest

How urgent is CVE-2024-56528?

Priority 40/100. High severity; Remotely exploitable, no login, no user action

References

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