CVE-2026-92779Public exploitNetwork attack vectorHinoki check available

Process-wide object corruption via unsafe binding paths

Published Sep 16, 2026 · Updated Sep 17, 2026

Prototype pollution in Builder.io Gen2 SDKs through 5.2.11 and 0.25.13 allows remote authenticated users to corrupt process-wide objects. The binding evaluator passes attacker-controlled content keys into a deep-set helper that accepts proto, prototype, and constructor path segments and writes through them to Object.prototype. The attacker must control a rendered content block; polluted properties affect later objects in the process and can cross tenant render boundaries.

CVSS severity7.2
High
EPSS probability0.49%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Prototype pollution in Builder.io Gen2 SDKs through 5.2.11 and 0.25.13 allows remote authenticated users to corrupt process-wide objects. The binding evaluator passes attacker-controlled content keys into a deep-set helper that accepts proto, prototype, and constructor path segments and writes through them to Object.prototype. The attacker must control a rendered content block; polluted properties affect later objects in the process and can cross tenant render boundaries.

The record

CVE
CVE-2026-92779
Published
Sep 16, 2026
Updated
Sep 17, 2026
Vendor
Builder.io
Product
@builder.io/sdk-solid
Classifications
CWE-1321
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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 <=5.2.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Builder.io · @builder.io/sdk-solidversion=0 <=5.2.11
Builder.io · @builder.io/sdk-svelteversion=0 <=5.2.11
Builder.io · @builder.io/sdk-angularversion=0 <=0.25.13
Builder.io · @builder.io/sdk-qwikversion=0 <=0.25.13
Builder.io · @builder.io/sdk-vueversion=0 <=5.2.11
Builder.io · @builder.io/sdk-reactversion=0 <=5.2.11
Builder.io · @builder.io/sdk-react-nextjsversion=0 <=0.25.13

Published CVSS scores

7.2VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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