CVE-2022-29240: Scylla is a real-time big data database that is API-compatible with Apache Cassandra and Amazon DynamoDB

This month

HIGH 8.1REMOTEWATCHLISTUPGRADE

CVE-2022-29240 is a high-severity flaw (CVSS 8.1) affecting scylla. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Scylla is a real-time big data database that is API-compatible with Apache Cassandra and Amazon DynamoDB. When decompressing CQL frame received from user, Scylla assumes that user-provided uncompressed length is correct. If user provides fake length, that is greater than the real one, part of decompression buffer won't be overwritten, and will be left uninitialized. This can be exploited in several ways, depending on the privileges of the user. 1

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-908
Published	2022-09-15
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: scylladb

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

Am I affected?

Timeline

2022-09-15 22:15 UTCPublished CVE record published
2026-06-17 04:39 UTCUpdated Record last modified

scylladb scylla UPGRADE

Affected: < 4.6.7 · < 2020.1.14 · >= 5.0.0 and < 5.0.3 · >= 2021.1.0 and < 2021.1.12

Fixed in: 4.6.7, 5.0.3, 2020.1.14, 2021.1.12

Safe to downgrade to: a release before 5.0.0

1. Check installed version

apt-cache policy scylla || rpm -q scylla || scylla --version

2. UPGRADE to 4.6.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade scylla

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade scylla

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 5.0.0 (Debian / Ubuntu)

apt-cache madison scylla sudo apt install scylla=<VERSION_BEFORE_5.0.0> sudo apt-mark hold scylla

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

dnf --showduplicates list scylla sudo dnf downgrade scylla-<VERSION_BEFORE_5.0.0> sudo dnf versionlock add scylla

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-2022-29240?

scylla: upgrade to 4.6.7, 5.0.3, 2020.1.14, 2021.1.12. Exact commands for each OS are on this page.

Is CVE-2022-29240 being exploited?

CVE-2022-29240 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-2022-29240 affect?

CVE-2022-29240 affects scylla. Severity is high (CVSS 8.1). Scylla is a real-time big data database that is API-compatible with Apache Cassandra and Amazon DynamoDB. When decompressing CQL frame received from user, Scylla assumes that user-provided uncompressed length is correct. If user provides fa

How urgent is CVE-2022-29240?

Priority 56/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Apache Cassandra vulnerabilities

References

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