CVE-2022-28355: randomUUID in Scala.js before 1.10.0 generates predictable values.

Q: How do I fix CVE-2022-28355?

scala.js: upgrade to 1.10.0. Exact commands for each OS are on this page.

Q: Is CVE-2022-28355 being exploited?

CVE-2022-28355 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-28355 affect?

CVE-2022-28355 affects scala.js. Severity is high (CVSS 7.5). randomUUID in Scala.js before 1.10.0 generates predictable values.

Q: How urgent is CVE-2022-28355?

Priority 50/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2022-28355 is a high-severity flaw (CVSS 7.5) affecting scala.js. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

randomUUID in Scala.js before 1.10.0 generates predictable values.

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	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-330
Published	2022-04-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: scala-js

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

Am I affected?

Timeline

2022-04-02 21:15 UTCPublished CVE record published
2026-06-17 04:38 UTCUpdated Record last modified

scala-js scala.js UPGRADE

Affected: < 1.10.0

Fixed in: 1.10.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy scala.js || rpm -q scala.js || scala.js --version

2. UPGRADE to 1.10.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade scala.js

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade scala.js

Note

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

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-2022-28355?

scala.js: upgrade to 1.10.0. Exact commands for each OS are on this page.

Is CVE-2022-28355 being exploited?

CVE-2022-28355 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-2022-28355 affect?

CVE-2022-28355 affects scala.js. Severity is high (CVSS 7.5). randomUUID in Scala.js before 1.10.0 generates predictable values.

How urgent is CVE-2022-28355?

Priority 50/100. High severity; Remotely exploitable, no login, no user action

References

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