PatchTheCVECVE-2021-26833: Cleartext Storage in a File or on Disk in TimelyBills <= 1.7.0 for iOS and versions <= 1.21.115 for Android al
CVE-2021-26833 is a medium-severity flaw (CVSS 5.9) affecting timelybills, timelybills. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.9 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.0% (top 37%) |
| CISA exploited list | No |
| Weakness | CWE-459 |
| Published | 2021-04-06 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-26833?
timelybills: upgrade to newer than 1.7.0; timelybills: upgrade to newer than 1.21.115. Exact commands for each OS are on this page.
Is CVE-2021-26833 being exploited?
CVE-2021-26833 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-26833 affect?
CVE-2021-26833 affects timelybills, timelybills. Severity is medium (CVSS 5.9). 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
How urgent is CVE-2021-26833?
Priority 46/100. Public exploit reference; Remotely exploitable, no login, no user action
Software pages
Android vulnerabilities · iOS vulnerabilities