CVE-2021-26833
CVE-2021-26833 is a medium-severity vulnerability in Timelybills with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-459.
Key facts
- Severity: Medium (CVSS 3.x base score 5.9)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (58th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-459
- Affected product: Timelybills
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2021-26833?
- 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.
- How severe is CVE-2021-26833?
- CVE-2021-26833 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2021-26833 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-26833?
- CVE-2021-26833 primarily affects Timelybills. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-26833?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-26833 published?
- CVE-2021-26833 was published on 2021-04-06 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:timelybills:timelybills:*:*:*:*:*:iphone_os:*:*
- cpe:2.3:a:timelybills:timelybills:*:*:*:*:*:android:*:*
Other CWE-459 vulnerabilities
- CVE-2023-36468 — Critical (CVSS 9.9): XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. When an XWiki…
- CVE-2022-45347 — Critical (CVSS 9.8): Apache ShardingSphere-Proxy prior to 5.3.0 when using MySQL as database backend didn't cleanup the database session…
- CVE-2021-45330 — Critical (CVSS 9.8): An issue exsits in Gitea through 1.15.7, which could let a malicious user gain privileges due to client side cookies…
- CVE-2021-45706 — Critical (CVSS 9.8): An issue was discovered in the zeroize_derive crate before 1.1.1 for Rust. Dropped memory is not zeroed out for an enum.
- CVE-2021-32928 — Critical (CVSS 9.8): The Sentinel LDK Run-Time Environment installer (Versions 7.6 and prior) adds a firewall rule named “Sentinel License…
- CVE-2020-13451 — Critical (CVSS 9.8): An incomplete-cleanup vulnerability in the Office rendering engine of Gotenberg through 6.2.1 allows an attacker to…