CVE-2024-28120: codeium-chrome is an open source code completion plugin for the chrome web browser

This month

MEDIUM 6.5DOWNGRADE

CVE-2024-28120 is a medium-severity flaw (CVSS 6.5) affecting codeium. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

codeium-chrome is an open source code completion plugin for the chrome web browser. The service worker of the codeium-chrome extension doesn't check the sender when receiving an external message. This allows an attacker to host a website that will steal the user's Codeium api-key, and thus impersonate the user on the backend autocomplete server. This issue has not been addressed. Users are advised to monitor the usage of their API key.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-200, CWE-284
Published	2024-03-11
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2024-03-11 22:15 UTCPublished CVE record published
2026-06-17 07:21 UTCUpdated Record last modified

codeium codeium DOWNGRADE

Affected: 1.2.52

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.52

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2.52 (Debian / Ubuntu)

apt-cache madison codeium sudo apt install codeium=<VERSION_BEFORE_1.2.52> sudo apt-mark hold codeium

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list codeium sudo dnf downgrade codeium-<VERSION_BEFORE_1.2.52> sudo dnf versionlock add codeium

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-2024-28120?

codeium: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-28120 being exploited?

CVE-2024-28120 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-2024-28120 affect?

CVE-2024-28120 affects codeium. Severity is medium (CVSS 6.5). codeium-chrome is an open source code completion plugin for the chrome web browser. The service worker of the codeium-chrome extension doesn't check the sender when receiving an external message. This allows an attacker to host a website th

How urgent is CVE-2024-28120?

Priority 40/100. Public exploit reference

Software pages

Google Chrome vulnerabilities

References

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