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CVE-2021-29500

24
FAUCET Score

CVE-2021-29500 affects the bubble fireworks Java package, specifically versions prior to 2021.BUILD-SNAPSHOT, by failing to properly verify JSON Web Token (JWT) signatures, enabling the forgery of valid JWTs. This vulnerability has a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity and high integrity impact, allowing unauthorized data modification. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2021.build-snapshotCPE matchmatch criteria
cpe:2.3:a:bubble_fireworks_project:bubble_fireworks:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
44.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0060 is in the 22nd percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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