CVE-2021-21253 json
Use of a One-Way Hash without a Salt in OnlineVotingSystem
published 2021-01-21 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8635
- cvss
- 5.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- onlinevotingsystem_project onlinevotingsystem 1.1.2
Exploit prediction
0.74% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- dbijaya OnlineVotingSystem
Classification
References
-
github.com
/dbijaya/OnlineVotingSystem/commit/0181cb0272857696c8eb3e44fcf6cb014ff90f09
patch, third-party-advisory
-
github.com
/dbijaya/OnlineVotingSystem/security/advisories/GHSA-wwg8-372v-v332
third-party-advisory
Sources
- CVE List CVE-2021-21253
- NVD CVE-2021-21253
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