TI-2026-69085 Aliases CVE-2026-106550 GHSA-37q3-7h5g-p75h

Prototype pollution in Mozilla Node-convict enables denial of service

LOW 39CWE-1321Published 2026-10-06 · Updated 2026-10-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service, Tampering
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-400 and CWE-915.

Summary

Mozilla Node-convict version 6.2.2 and later is affected. Incomplete prototype pollution protections in config.set() (CWE-1321) let an attacker who controls a configuration key overwrite core JavaScript methods such as Object.assign. The resulting persistent process-wide failures require a restart, and exploitation requires an endpoint that forwards attacker-controlled keys into config.set().

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Mozilla's Node-convict (version 6.2.2 and later) is vulnerable to a Denial of Service vulnerability caused by incomplete prototype‑pollution protections in config.set(). An attacker controlling the configuration key can write arbitrary properties to constructor.<key>, which walk() resolves to the global Object function. This allows overwriting core JavaScript methods such as Object.assign, leading to persistent process-wide failures and requiring a restart. The issue bypasses existing filters that only block constructor.prototype.* and __proto__.*. Exploitation requires an endpoint that forwards attacker-controlled keys into config.set().

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00284 21st percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Mozilla	Node-convict	6.2.2	—	No fix listed	CNA

Node-convict VendorMozilla Affected 6.2.2 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Mozilla Node-convict. Red Hat lists Red Hat Build of Podman Desktop as affected without a fix, and Red Hat has no fix plan available for it.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Build of Podman Desktop	Affected	No fix yet

Timeline

2026-10-07 Threatist record created from CVE-2026-106550
2026-10-07 Alias added: GHSA-37q3-7h5g-p75h
2026-10-07 Affected versions changed · Red Hat
2026-10-07 CVSS score added · Red Hat
2026-10-07 CVSS score added · CISA ADP
2026-10-07 Weakness changed · CISA ADP
2026-10-07 CISA SSVC decision points changed
2026-10-07 1 new reference · CNA

References

Other 2

TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8

See all 4204 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences