How severe is CVE-2021-29500?

CVE-2021-29500 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-29500 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29500?

CVE-2021-29500 affects Bubble Fireworks Project Bubble Fireworks. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-29500?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-29500 published?

CVE-2021-29500 was published on 2021-06-04 and last updated on 2026-06-17.

CVE-2021-29500

CVE-2021-29500 is a high-severity vulnerability in Bubble Fireworks Project Bubble Fireworks with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-347
Affected product: Bubble Fireworks Project Bubble Fireworks
Published: 2021-06-04
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-29500?: CVE-2021-29500 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-29500 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29500?: CVE-2021-29500 affects Bubble Fireworks Project Bubble Fireworks. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29500?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-29500 published?: CVE-2021-29500 was published on 2021-06-04 and last updated on 2026-06-17.

References

https://github.com/fxbin/bubble-fireworks/security/advisories/GHSA-hj36-84cp-29pr

Affected products (1)

cpe:2.3:a:bubble_fireworks_project:bubble_fireworks:*:*:*:*:*:*:*:*

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