CVE-2026-44293HIGH 8.8EPSS p20.9%

CVE-2026-44293CVE-2026-44293

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated JavaScript for toObject conversion could include an unsafe expression derived from a schema-controlled bytes field default value. A crafted descriptor with a non-string default value for a bytes field could cause attacker-controlled code to be emitted into the generated conversion function. This vulnerability is fixed in 7.5.6 and 8.0.2.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.29% probability of exploitation · percentile 20.9% · 2026-06-19T12:03:05Z
Published2026-05-13
Last modified2026-05-13

Underlying weaknesses· 1

CWE-94

References

  1. https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-66ff-xgx4-vchm

1

TypeTargetConfidenceTier
WeaknessImproper Control of Generation of Code ('Code Injection')cwe-940%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2026-44291
CVE
CVE-2026-41242
CVE
CVE-2026-44295
CVE
CVE-2026-49493
CVE
CVE-2026-44728
CVE
CVE-2026-45302
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.