CVE-2021-21253
CVE-2021-21253 is a medium-severity vulnerability in Onlinevotingsystem Project Onlinevotingsystem with a CVSS 3.x base score of 5.8. 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-916.
Key facts
- Severity: Medium (CVSS 3.x base score 5.8)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (50th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-916
- Affected product: Onlinevotingsystem Project Onlinevotingsystem
- Published:
- Last modified:
Description
OnlineVotingSystem is an open source project hosted on GitHub. OnlineVotingSystem before version 1.1.2 hashes user passwords without a salt, which is vulnerable to dictionary attacks. Therefore there is a threat of security breach in the voting system. Without a salt, it is much easier for attackers to pre-compute the hash value using dictionary attack techniques such as rainbow tables to crack passwords. This problem is fixed and published in version 1.1.2. A long randomly generated salt is added to the password hash function to better protect passwords stored in the voting system.
Frequently asked questions
- What is CVE-2021-21253?
- OnlineVotingSystem is an open source project hosted on GitHub. OnlineVotingSystem before version 1.1.2 hashes user passwords without a salt, which is vulnerable to dictionary attacks. Therefore there is a threat of security breach in the voting system. Without a salt, it is much easier for attackers to pre-compute the hash value using dictionary attack techniques such as rainbow tables to crack passwords. This problem is fixed and published in version 1.1.2. A long randomly generated salt is added to the password hash function to better protect passwords stored in the voting system.
- How severe is CVE-2021-21253?
- CVE-2021-21253 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2021-21253 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-21253?
- CVE-2021-21253 affects Onlinevotingsystem Project Onlinevotingsystem. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-21253?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-21253 published?
- CVE-2021-21253 was published on 2021-01-21 and last updated on 2026-06-17.
References
- https://github.com/dbijaya/OnlineVotingSystem/commit/0181cb0272857696c8eb3e44fcf6cb014ff90f09
- https://github.com/dbijaya/OnlineVotingSystem/security/advisories/GHSA-wwg8-372v-v332
Affected products (1)
- cpe:2.3:a:onlinevotingsystem_project:onlinevotingsystem:*:*:*:*:*:*:*:*
Other CWE-916 vulnerabilities
- CVE-2020-14516 — Critical (CVSS 10.0): In Rockwell Automation FactoryTalk Services Platform Versions 6.10.00 and 6.11.00, there is an issue with the…
- CVE-2026-30789 — Critical (CVSS 9.8): Use of Password Hash With Insufficient Computational Effort, Improper Restriction of Excessive Authentication Attempts…
- CVE-2024-5743 — Critical (CVSS 9.8): An attacker could exploit the 'Use of Password Hash With Insufficient Computational Effort' vulnerability in EveHome…
- CVE-2021-36767 — Critical (CVSS 9.8): In Digi RealPort through 4.10.490, authentication relies on a challenge-response mechanism that gives access to the…
- CVE-2021-32519 — Critical (CVSS 9.8): Use of password hash with insufficient computational effort vulnerability in QSAN Storage Manager, XEVO, SANOS allows…
- CVE-2019-17216 — Critical (CVSS 9.8): An issue was discovered on V-Zug Combi-Steam MSLQ devices before Ethernet R07 and before WLAN R05. Password…