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TI-2024-21738 Aliases CVE-2024-32866GHSA-624g-8qjg-8qxf

Conform contains Prototype Pollution Vulnerability in `parseWith...` function

Priority HIGH 76CWE-1321Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Conform, a type-safe form validation library, allows the parsing of nested objects in the form of `object.property`. Due to an improper implementation of this feature in versions prior to 1.1.1, an attacker can exploit the feature to trigger prototype pollution by passing a crafted input to `parseWith...` functions. Applications that use conform for server-side validation of form data or URL parameters are affected by this vulnerability. Version 1.1.1 contains a patch for the issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00725 54th percentileScored 2026-11-07
Fix Fixed conform (edmundhung): 1.1.1@conform-to/dom (npm): 1.1.1, 0.9.2+2 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
edmundhungconformbefore 1.1.11.1.1Patch availableCNA
—@conform-to/dom (npm)1.0.0 to before 1.1.11.1.1Patch availableGHSA-624g-8qjg-8qxf
—@conform-to/zod (npm)1.0.0 to before 1.1.11.1.1Patch availableGHSA-624g-8qjg-8qxf
—@conform-to/yup (npm)1.0.0 to before 1.1.11.1.1Patch availableGHSA-624g-8qjg-8qxf
—@conform-to/zod (npm)before 0.9.20.9.2Patch availableGHSA-624g-8qjg-8qxf
—@conform-to/yup (npm)before 0.9.20.9.2Patch availableGHSA-624g-8qjg-8qxf
—@conform-to/dom (npm)before 0.9.20.9.2Patch availableGHSA-624g-8qjg-8qxf
  • conform Vendoredmundhung Affected before 1.1.1 Fixed in 1.1.1 Patch available CNA
  • @conform-to/dom (npm) Vendor— Affected 1.0.0 to before 1.1.1 Fixed in 1.1.1 Patch available GHSA-624g-8qjg-8qxf
  • @conform-to/zod (npm) Vendor— Affected 1.0.0 to before 1.1.1 Fixed in 1.1.1 Patch available GHSA-624g-8qjg-8qxf
  • @conform-to/yup (npm) Vendor— Affected 1.0.0 to before 1.1.1 Fixed in 1.1.1 Patch available GHSA-624g-8qjg-8qxf
  • @conform-to/zod (npm) Vendor— Affected before 0.9.2 Fixed in 0.9.2 Patch available GHSA-624g-8qjg-8qxf
  • @conform-to/yup (npm) Vendor— Affected before 0.9.2 Fixed in 0.9.2 Patch available GHSA-624g-8qjg-8qxf
  • @conform-to/dom (npm) Vendor— Affected before 0.9.2 Fixed in 0.9.2 Patch available GHSA-624g-8qjg-8qxf

CPE names CISA-ADP · 1

CPEVersionsRoleVendor
cpe:2.3:a:edmundhung:conform:*:*:*:*:*:*:*:*——edmundhung
  • cpe:2.3:a:edmundhung:conform:*:*:*:*:*:*:*:* Versions — — ·edmundhung

Remediation

  • Fix · CNA conform (edmundhung) Fixed in 1.1.1
  • Fix · GHSA-624g-8qjg-8qxf @conform-to/dom (npm) Fixed in 1.1.1 Advisory →
  • Fix · GHSA-624g-8qjg-8qxf @conform-to/zod (npm) Fixed in 1.1.1 Advisory →
  • Fix · GHSA-624g-8qjg-8qxf @conform-to/yup (npm) Fixed in 1.1.1 Advisory →
  • Fix · GHSA-624g-8qjg-8qxf @conform-to/zod (npm) Fixed in 0.9.2 Advisory →
  • Fix · GHSA-624g-8qjg-8qxf @conform-to/yup (npm) Fixed in 0.9.2 Advisory →
  • Fix · GHSA-624g-8qjg-8qxf @conform-to/dom (npm) Fixed in 0.9.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-32866
  2. 2026-10-03 Alias added: GHSA-624g-8qjg-8qxf

References

Advisory 1

Other 5

  • TI-2026-36447 Conform: parseSubmission vulnerable to CPU exhaustion when parsing many unique form fields CVSS 4.0HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences