We use these services and cookies to improve your user experience. You may opt out if you wish, however, this may limit some features on this site.

Please see our statement on Data Privacy.

Crisp.chat (Helpdesk and Chat)

Ok

THREATINT
PUBLISHED

CVE-2021-47663

Improper session handling



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.

Reserved 2025-03-17 | Published 2025-04-24 | Updated 2025-04-24 | Assigner CERTVDE


HIGH: 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-613: Insufficient Session Expiration

Product status

Default status
unaffected

0.0.0
affected

Credits

Siegfried Hollerer by TU Wien finder

References

www.sciencedirect.com/science/article/pii/S2351978921001657

cve.org (CVE-2021-47663)

nvd.nist.gov (CVE-2021-47663)

Download JSON

Share this page
https://cve.threatint.eu/CVE/CVE-2021-47663

Support options

Helpdesk Chat, Email, Knowledgebase
© Copyright 2025 THREATINT
Made in Cyprus with ❤ + ☼
 System status
Find us on
Data Privacy
Terms of Use
Logo BSI Allianz für Cyber-Sicherheit
Error loading Crisp.chat. Please check your web content filter and browser plugins.