CVE-2021-29500: bubble fireworks is an open source java package relating to Spring Framework

Q: How do I fix CVE-2021-29500?

bubble fireworks: upgrade to 2021.build-snapshot. Exact commands for each OS are on this page.

Q: Is CVE-2021-29500 being exploited?

CVE-2021-29500 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-2021-29500 affect?

CVE-2021-29500 affects bubble fireworks. Severity is high (CVSS 7.5). bubble fireworks is an open source java package relating to Spring Framework. In bubble fireworks before version 2021.BUILD-SNAPSHOT there is a vulnerability in which the package did not properly verify the signature of JSON Web Tokens. Thi

Q: How urgent is CVE-2021-29500?

Priority 43/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2021-29500 is a high-severity flaw (CVSS 7.5) affecting bubble fireworks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

bubble fireworks is an open source java package relating to Spring Framework. In bubble fireworks before version 2021.BUILD-SNAPSHOT there is a vulnerability in which the package did not properly verify the signature of JSON Web Tokens. This allows to forgery of valid JWTs.

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	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-347
Published	2021-06-04
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: bubble fireworks project

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

Am I affected?

Timeline

2021-06-04 20:15 UTCPublished CVE record published
2026-06-17 03:47 UTCUpdated Record last modified

bubble fireworks project bubble fireworks UPGRADE

Affected: < 2021.build-snapshot

Fixed in: 2021.build-snapshot

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy bubble-fireworks || rpm -q bubble-fireworks || bubble-fireworks --version

2. UPGRADE to 2021.build-snapshot (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade bubble-fireworks

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bubble-fireworks

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-2021-29500?

bubble fireworks: upgrade to 2021.build-snapshot. Exact commands for each OS are on this page.

Is CVE-2021-29500 being exploited?

CVE-2021-29500 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-2021-29500 affect?

CVE-2021-29500 affects bubble fireworks. Severity is high (CVSS 7.5). bubble fireworks is an open source java package relating to Spring Framework. In bubble fireworks before version 2021.BUILD-SNAPSHOT there is a vulnerability in which the package did not properly verify the signature of JSON Web Tokens. Thi

How urgent is CVE-2021-29500?

Priority 43/100. High severity; Remotely exploitable, no login, no user action

Software pages

Spring Framework vulnerabilities · Java vulnerabilities

References

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