7.5

CVE-2026-44290: protobufjs_project protobufjs Prototype Pollution

CVSS: 7.5v3.1HighAnalyzed
AliasesCGA-2r3m-h544-xhr6CGA-3rc4-78j3-4439CGA-5cjf-g92j-4xfx
Published 13-05-2026Last modified 14-05-2026
Open JSON

Vulnerability summary

CVE-2026-44290 is a high (CVSS 7.5) Prototype Pollution vulnerability in protobufjs_project protobufjs. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.3% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.50%
0%100%
Low · +0.12 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-6C4G-3PRF-2C75

Timeline

  1. 13-05-2026
    PublishedVulnerability first disclosed.
  2. 14-05-2026
    Last modifiedVulnerability information updated.

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs allowed certain schema option paths to traverse through inherited object properties while applying options. A crafted protobuf schema or JSON descriptor could cause option handling to write to properties on global JavaScript constructors, corrupting process-wide built-in functionality. This vulnerability is fixed in 7.5.6 and 8.0.2.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

+0.12 pp

From 0.37% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.50%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard25 products
  • cadence-web< 4.0.15-r2
  • gemini-cli< 0.44.0-r0
  • homepage< 1.13.1-r3
  • kibana-8.19< 8.19.15-r0
  • kibana-8.19-bitnami< 8.19.15-r0
Wolfi4 products
  • kubeflow-centraldashboard< 1.10.0-r21
  • pulumi-language-nodejs< 3.237.0-r1
  • renovate< 43.170.15-r2
  • vitess-23< 23.0.4-r5
Npm1 product
  • protobufjs< 7.5.6 | ≥ 8.0.0, < 8.0.2
Protobufjs1 product
Protobufjs_project1 product

5 vendors · 32 products

References

6 links