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4 vulnerabilities by open-circle
CVE-2026-59952 (GCVE-0-2026-59952)
Vulnerability from nvd – Published: 2026-07-30 00:10 – Updated: 2026-07-30 00:10
VLAI
EPSS
VEX
Title
Valibot: record() issue paths can make flatten() throw for inherited Object property names
Summary
Valibot helps validate data using a schema. Versions prior to 1.4.2 can throw a TypeError inside its flatten() helper when validation issues contain attacker-controlled object keys such as toString, valueOf, or hasOwnProperty. The issue is reachable through normal record() validation. record() intentionally filters __proto__, prototype, and constructor, but it still accepts other own keys that collide with inherited Object.prototype properties. If the record key schema or value schema rejects such an entry, Valibot creates an issue path containing that key. Passing the resulting issues to Valibot's documented flatten() helper causes flatErrors.nested[dotPath] to resolve to the inherited method instead of an own error array, and the helper calls .push(...) on that function. This is not a global prototype pollution issue. The impact is availability/error handling: applications that validate user-controlled objects with record() and flatten validation errors for API responses can crash the request path with a TypeError instead of returning structured validation errors. This issue has been fixed in version 1.4.2.
Severity
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/open-circle/valibot/security/a… | x_refsource_CONFIRM |
| https://github.com/open-circle/valibot/pull/1522 | x_refsource_MISC |
| https://github.com/open-circle/valibot/commit/1bd… | x_refsource_MISC |
| https://github.com/open-circle/valibot/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-circle | valibot |
Affected:
< 1.4.2
|
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}
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CVE-2025-66020 (GCVE-0-2025-66020)
Vulnerability from nvd – Published: 2025-11-26 01:49 – Updated: 2025-11-26 14:16
VLAI
EPSS
VEX
Title
Valibot has a ReDoS vulnerability in `EMOJI_REGEX`
Summary
Valibot helps validate data using a schema. In versions from 0.31.0 to 1.1.0, the EMOJI_REGEX used in the emoji action is vulnerable to a Regular Expression Denial of Service (ReDoS) attack. A short, maliciously crafted string (e.g., <100 characters) can cause the regex engine to consume excessive CPU time (minutes), leading to a Denial of Service (DoS) for the application. This issue has been patched in version 1.2.0.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/open-circle/valibot/security/a… | x_refsource_CONFIRM |
| https://github.com/open-circle/valibot/commit/cfb… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-circle | valibot |
Affected:
>= 0.31.0, < 1.2.0
|
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}
],
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CVE-2026-59952 (GCVE-0-2026-59952)
Vulnerability from cvelistv5 – Published: 2026-07-30 00:10 – Updated: 2026-07-30 00:10
VLAI
EPSS
VEX
Title
Valibot: record() issue paths can make flatten() throw for inherited Object property names
Summary
Valibot helps validate data using a schema. Versions prior to 1.4.2 can throw a TypeError inside its flatten() helper when validation issues contain attacker-controlled object keys such as toString, valueOf, or hasOwnProperty. The issue is reachable through normal record() validation. record() intentionally filters __proto__, prototype, and constructor, but it still accepts other own keys that collide with inherited Object.prototype properties. If the record key schema or value schema rejects such an entry, Valibot creates an issue path containing that key. Passing the resulting issues to Valibot's documented flatten() helper causes flatErrors.nested[dotPath] to resolve to the inherited method instead of an own error array, and the helper calls .push(...) on that function. This is not a global prototype pollution issue. The impact is availability/error handling: applications that validate user-controlled objects with record() and flatten validation errors for API responses can crash the request path with a TypeError instead of returning structured validation errors. This issue has been fixed in version 1.4.2.
Severity
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/open-circle/valibot/security/a… | x_refsource_CONFIRM |
| https://github.com/open-circle/valibot/pull/1522 | x_refsource_MISC |
| https://github.com/open-circle/valibot/commit/1bd… | x_refsource_MISC |
| https://github.com/open-circle/valibot/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-circle | valibot |
Affected:
< 1.4.2
|
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CVE-2025-66020 (GCVE-0-2025-66020)
Vulnerability from cvelistv5 – Published: 2025-11-26 01:49 – Updated: 2025-11-26 14:16
VLAI
EPSS
VEX
Title
Valibot has a ReDoS vulnerability in `EMOJI_REGEX`
Summary
Valibot helps validate data using a schema. In versions from 0.31.0 to 1.1.0, the EMOJI_REGEX used in the emoji action is vulnerable to a Regular Expression Denial of Service (ReDoS) attack. A short, maliciously crafted string (e.g., <100 characters) can cause the regex engine to consume excessive CPU time (minutes), leading to a Denial of Service (DoS) for the application. This issue has been patched in version 1.2.0.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/open-circle/valibot/security/a… | x_refsource_CONFIRM |
| https://github.com/open-circle/valibot/commit/cfb… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-circle | valibot |
Affected:
>= 0.31.0, < 1.2.0
|
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