CVE-2026-92781
Builder.io Gen2 SDKs through 5.2.11 Prototype Pollution via builder.userAttributes
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: poc
- Automatable: no
- Technical impact: partial
Summary
Builder.io Gen2 SDKs through versions 5.2.11 and 0.25.13 contain a prototype pollution vulnerability in the unflatten helper that processes builder.userAttributes query parameters without prototype guards. Attackers can craft preview links with proto or prototype segments to pollute Object.prototype in a visitor's browser when the SDK processes the malicious URL.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: poc · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- BuilderIO @builder.io/sdk-react
through 5.2.11
- BuilderIO @builder.io/sdk-vue
through 5.2.11
- BuilderIO @builder.io/sdk-svelte
through 5.2.11
- BuilderIO @builder.io/sdk-solid
through 5.2.11
- BuilderIO @builder.io/sdk-qwik
through 0.25.13
- BuilderIO @builder.io/sdk-angular
through 0.25.13
- BuilderIO @builder.io/sdk-react-nextjs
through 0.25.13