CVE-2021-26833 json
Cleartext Storage in a File or on Disk in TimelyBills <= 1.7.0 for iOS and versions <= 1.21.115 for Android allows attacker who can locally…
published 2021-04-06 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13617
- cvss
- 5.9
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 63%
- public exploits
- 0
- none known
Summary
Cleartext Storage in a File or on Disk in TimelyBills <= 1.7.0 for iOS and versions <= 1.21.115 for Android allows attacker who can locally read user's files obtain JWT tokens for user's account due to insufficient cache clearing mechanisms. A threat actor can obtain sensitive user data by decoding the tokens as JWT is signed and encoded, not encrypted.
Exploit prediction
1.01% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- beefaaubee.medium.com https://beefaaubee.medium.com/cve-2021-26833-cleartext-storage-in-a-file-or-on-disk-in-timelybills-1-7-0-5760dc461bd0 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-459 Incomplete Cleanup
References
-
beefaaubee.medium.com
/cve-2021-26833-cleartext-storage-in-a-file-or-on-disk-in-timelybills-1-7-0-5760dc461bd0
exploit, third-party-advisory
Sources
- CVE List CVE-2021-26833
- NVD CVE-2021-26833
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