Vulnerability Database · Debian · ujson · Version
ujson 5.3.0-1
5.3.0-1 is affected by 7 vulnerabilities.
The vulnerabilities that cover this exact version are listed below with the fixed version to move to.
Critical 0 High 4 Medium 3 Low 0 Unrated 0
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Database updated 23/Oct/2026
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01 Vulnerabilities affecting this version
ujson 5.3.0-1 vulnerabilities
7 vulnerabilities cover ujson 5.3.0-1. Open the full list in the database.
| Vulnerability | Severity | Fixed version | Disclosed |
|---|---|---|---|
| Memory Leak Vulnerability in UltraJSON (ujson) Prior to Version 5.12.1 | 7.5 high | No fix published | 27 May 2026 |
| Memory Leak Vulnerability in UltraJSON (ujson) Affects Multiple Debian Versions | 7.5 high | No fix published | 20 Mar 2026 |
| Buffer Overflow and Infinite Loop Vulnerability in ujson Package | 7.5 high | No fix published | 20 Mar 2026 |
| Improper JSON Decoding in UltraJSON (ujson) Leading to Potential Data Corruption | 7.5 high | No fix published | 05 Jul 2022 |
| Input Validation Bypass in UltraJSON (ujson) - CVE-2026-54911 | 6.5 medium | No fix published | 22 Jun 2026 |
| Double Free Vulnerability in UltraJSON (ujson) Prior to Version 5.4.0 | 5.9 medium | No fix published | 05 Jul 2022 |
| Buffer Overflow Vulnerability in UltraJSON (ujson) Package | 5.5 medium | No fix published | 01 Jan 2022 |
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Questions
About ujson 5.3.0-1
Is ujson 5.3.0-1 vulnerable?
Yes. 7 vulnerabilities in the Vulert database cover ujson 5.3.0-1: 0 critical, 4 high, 3 medium and 0 low. Each entry above names the fixed version to move to.
How do I monitor ujson for upcoming vulnerabilities?
Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the ujson version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.