CVE-2026-85625Public exploitNetwork attack vector

Code execution via inherited string $where operator

Published Sep 4, 2026 · Updated Sep 4, 2026

Code injection in crcn Sift 17.1.3 and earlier allows remote attackers to execute arbitrary JavaScript through a crafted query. Sift enumerates query properties with for...in and passes inherited or direct string $where values to new Function when CSP_ENABLED is unset. Exploitation requires an application to pass attacker-controlled queries, or a separate prototype-pollution primitive; successful execution runs with the host process privileges.

CVSS severity9.2
Critical
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in crcn Sift 17.1.3 and earlier allows remote attackers to execute arbitrary JavaScript through a crafted query. Sift enumerates query properties with for...in and passes inherited or direct string $where values to new Function when CSP_ENABLED is unset. Exploitation requires an application to pass attacker-controlled queries, or a separate prototype-pollution primitive; successful execution runs with the host process privileges.

The record

CVE
CVE-2026-85625
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
crcn
Product
Sift
Classifications
CWE-1321, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=17.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

crcn · Siftversion=0 <=17.1.3

Published CVSS scores

9.2VulnCheckCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.1VulnCheckCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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')
T1059.007JavaScript/JScript

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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