HOMEVULNERABILITIESCVE-2026-44290
HIGH

CVE-2026-44290

CWE-1321Published: May 13, 2026· Updated: May 14, 2026

7.5
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:13.2th

Official 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.

NVD Source

Technical Analysis

CVE-2026-44290 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

protobufjs_project1 product
protobufjs
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jvwf-75h9-cwgg

All References (1)

→
https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jvwf-75h9-cwggMitigation · Vendor Advisory

Quick Facts

CVE IDCVE-2026-44290
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-1321
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedMay 13, 2026

Related CVEs (CWE-1321)

CVE-2026-44791
9.9
CVE-2026-49252
9.9
CVE-2026-44789
9.9
CVE-2026-32621
9.9
CVE-2026-33994
9.8
CVE-2026-26021
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-44290 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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