What is CVE-2021-29500?

CVE-2021-29500 is a high-severity vulnerability in Bubble Fireworks Project, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2021-06-04.

How severe is CVE-2021-29500?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Bubble Fireworks Project

CVE-2021-29500

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.

Published 2021-06-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.006 (46.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Bubble Fireworks Project
Fxbin Bubble-Fireworks — versions < 2021.BUILD-SNAPSHOT

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

github.com/fxbin/bubble-fireworks/security/advisories/GHSA-hj36-84cp-29pr (Third Party Advisory)

Frequently asked questions

What is CVE-2021-29500?: CVE-2021-29500 is a high-severity vulnerability in Bubble Fireworks Project, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2021-06-04.
How severe is CVE-2021-29500?: High severity. CVSS v3 base score is 7.5 out of 10.