CVE & CISA-KEV CatalogNVD
CVE-2021-47663
HIGH8.1
CVSS v3
Description
Due to improper JSON Web Tokens implementation an unauthenticated remote attacker can guess a valid session ID and therefore impersonate a user to gain full access.
CVSS v3 Vector
Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
0.37%probability of exploitation in 30 days
29thpercentile
Low risk: more likely to be exploited than 29% of all known CVEs.
References
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-29.