CVE-2026-44293

high

Published 2026-05-13 · Modified 2026-05-12

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CVSS v3

8.8

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v4 NEW

7.7

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

VIR risk

8.8

Description

protobuf.js: Code injection through bytes field defaults in generated toObject code

Predictions

Exploit likelihood

92%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact

Ecosystem	Package	Vulnerable	Fixed
npm	protobufjs	`<7.5.6`	`7.5.6`
npm	protobufjs	`>=8.0.0,<8.0.2`	`8.0.2`
NPM	protobufjs	`>= 8.0.0, <= 8.0.1`	`8.0.2`
NPM	protobufjs	`<= 7.5.5`	`7.5.6`

Application impact

Vendor	Product	Versions	Fixed
protobufjs_project	protobufjs	`{"endExcluding":"7.5.6"}`	`7.5.6`

References

CWEs

CWE-94

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.