CVE-2026-54756Public exploitNetwork attack vector

Prototype pollution via unfiltered configuration merge

Published Jul 1, 2026 · Updated Jul 1, 2026

Prototype pollution in XDSoft Jodit before 4.12.18 allows attackers to inject properties into Object.prototype via crafted options. Jodit.configure and its ConfigMerge and ConfigProto helpers recursively merge nested plain objects without rejecting proto, constructor, or prototype keys. Reachability requires an application to pass attacker-controlled or partially controlled configuration; successful pollution alters application logic and enables downstream data exposure, corruption, or service interruption.

CVSS severity6.3
Medium
EPSS probability0.46%
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 XDSoft Jodit before 4.12.18 allows attackers to inject properties into Object.prototype via crafted options. Jodit.configure and its ConfigMerge and ConfigProto helpers recursively merge nested plain objects without rejecting proto, constructor, or prototype keys. Reachability requires an application to pass attacker-controlled or partially controlled configuration; successful pollution alters application logic and enables downstream data exposure, corruption, or service interruption.

The record

CVE
CVE-2026-54756
Published
Jul 1, 2026
Updated
Jul 1, 2026
Vendor
XDSoft
Product
Jodit
Classifications
CWE-1321, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 1, 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=< 4.12.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

XDSoft · Joditversion=< 4.12.18

Published CVSS scores

6.3GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

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')
T1190Exploit Public-Facing Application

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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