CVE-2026-92779
Builder.io Gen2 SDKs through 5.2.11 Prototype Pollution via Bindings
- Published
- Updated
- Reserved
- Assigned by
- VulnCheck
Description
Builder.io Gen2 SDKs through versions 5.2.11 and 0.25.13 contain a prototype pollution vulnerability in the deep-set helper function that processes content block bindings without validation. Attackers can craft content blocks with binding keys containing __proto__, prototype, or constructor paths to pollute Object.prototype during rendering, affecting all subsequent objects created in the process including other tenants' renders.
Timeline
ID reserved
By VulnCheck
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulnCheckCNA (assigner) | 4.0 | High7.2 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N |
| VulnCheckCNA (assigner) | 3.1 | High7.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L |
| NVDNVD · Deferred | 4.0 | High7.2 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.49% · top 58% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Weakness
Affected products
BuilderIO · @builder.io/sdk-react
- affected ≤ 5.2.11
BuilderIO · @builder.io/sdk-vue
- affected ≤ 5.2.11
BuilderIO · @builder.io/sdk-svelte
- affected ≤ 5.2.11
BuilderIO · @builder.io/sdk-solid
- affected ≤ 5.2.11
BuilderIO · @builder.io/sdk-qwik
- affected ≤ 0.25.13
BuilderIO · @builder.io/sdk-angular
- affected ≤ 0.25.13
BuilderIO · @builder.io/sdk-react-nextjs
- affected ≤ 0.25.13
References (5)
- GitHub Issue #4823 (opens in a new tab)issue-tracking
- https://github.com/BuilderIO/builder (opens in a new tab)product
- binding keys from content JSON are used as the write path (opens in a new tab)technical-description
- the deep-set helper has no __proto__ guard (opens in a new tab)technical-description
- VulnCheck Advisory: Builder.io Gen2 SDKs through 5.2.11 Prototype Pollution via Bindings (opens in a new tab)third-party-advisory
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-92779)Record last updated .