CVE-2025-26278Public exploitNetwork attack vector

Service interruption via unsafe prototype-path assignment

Published Sep 25, 2025 · Updated Sep 25, 2025

Prototype pollution in dref 0.1.2 allows remote attackers to interrupt a consuming service by supplying a crafted property path. The lib.set function splits an attacker-controlled dotted path, traverses inherited properties without rejecting proto, and assigns the supplied value through the resulting Object.prototype reference. The library is not a standalone network service; exposure requires application code to pass remote input into lib.set, after which polluted prototype state can disrupt the hosting process.

CVSS severity7.5
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Prototype pollution in dref 0.1.2 allows remote attackers to interrupt a consuming service by supplying a crafted property path. The lib.set function splits an attacker-controlled dotted path, traverses inherited properties without rejecting proto, and assigns the supplied value through the resulting Object.prototype reference. The library is not a standalone network service; exposure requires application code to pass remote input into lib.set, after which polluted prototype state can disrupt the hosting process.

The record

CVE
CVE-2025-26278
Published
Sep 25, 2025
Updated
Sep 25, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1321, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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