VDB
CVE-2026-5758
CVE-2026-5758
PUBLISHED
CVSS 9.300000190734863 CRITICAL
JavaScript is vulnerable to prototype pollution in Mafintosh's protocol-buffers-schema Version 3.6.0, where an attacker may alter the application logic, bypass security checks, cause a DoS or achieve remote code execution.
EPSS 0.06% · 17.7th percentile
Risk Scores
CVSS v4.0
9.300000190734863
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS Score
0.06%
17.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mafintosh | Protocol-buffers-schema parser | 3.6.0 |
Timeline
- Apr 15, 2026 CVE Published
- Apr 15, 2026 PoC Published
- Apr 16, 2026 EPSS Score
- Apr 16, 2026 Security Advisory
- Apr 17, 2026 CVE Updated
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
References
- https://github.com/mafintosh/protocol-buffers-schema/pull/70 url
- https://morielharush.github.io/2026/04/12/cve-2026-5758-protocol-buffers-schema-prototype-pollution/ url
- https://nvd.nist.gov/vuln/detail/CVE-2026-5758 advisory
- https://morielharush.github.io/2026/04/12/cve-2026-5758-protocol-buffers-schema-prototype-pollution url