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01 Record

CVE-2025-59934

Formbricks missing JWT signature verification

CriticalPUBLISHEDCNA: GitHub_M
CNA base score9.4 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
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02 Description

Formbricks missing JWT signature verification

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
9.14% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 95.2% of scored records. A rank, not a probability.
NVD base score
9.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
NVD analysis status
Deferred. NVD last modified this record on 2026-10-19.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-09-26 23:03Z1 YR AGO
Last updated
2025-09-29 14:59Z1 YR AGO
Reserved
2025-09-23
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Critical (CVSS 9.4)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Weaknesses
  • CWE-287Improper AuthenticationClass
  • CWE-345Insufficient Verification of Data AuthenticityClass
  • CWE-347Improper Verification of Cryptographic SignatureBase
Data version
5.1
Document digest
635885ebd95f0fed83b31317f00ed1d8b175081ec23e478d7405784ab16cbbf5

05 Affected products

VendorProductVersionsPlatforms
formbricksformbricks< 4.0.1—

06 References