What’s Vulnerable › Vulnerabilities
CVE-2026-44294: protobufjs: Denial of service from crafted field names in generated code
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-13 · updated 2026-06-17
- Weakness: CWE-20
Description
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated JavaScript property accessors from schema-controlled field and oneof names. Certain control characters in field names were not escaped before being embedded into generated function bodies. A crafted schema or JSON descriptor could therefore cause generated encode, decode, verify, or conversion functions to fail during compilation. This vulnerability is fixed in 7.5.6 and 8.0.2.
Affected products
- protobufjs: before 7.5.6; from 8.0.0 before 8.0.2 — fixed in 7.5.6, 8.0.2
How to fix
Upgrade to a fixed version: protobufjs 7.5.6, 8.0.2. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-44294 or the next vulnerability affects your stack