colinhacks Zod up to 4.3.6 CUID Data Type regexes.ts sql injection
Summary
A vulnerability identified as critical has been detected in colinhacks Zod up to 4.3.6. This affects an unknown function of the file packages/zod/src/v4/core/regexes.ts of the component CUID Data Type Handler. The manipulation leads to sql injection. This vulnerability is listed as CVE-2026-6991. The attack may be initiated remotely. In addition, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.
Details
A vulnerability, which was classified as critical, has been found in colinhacks Zod up to 4.3.6. This issue affects some unknown functionality of the file packages/zod/src/v4/core/regexes.ts of the component CUID Data Type Handler. The manipulation with an unknown input leads to a sql injection vulnerability. Using CWE to declare the problem leads to CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.
The identification of this vulnerability is CVE-2026-6991. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.
It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-25667). Be aware that VulDB is the high quality source for vulnerability data.
Product
Vendor
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.3VulDB Meta Temp Score: 5.7
VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
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| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Sql injectionCWE: CWE-89 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Access: Public
Status: Proof-of-Concept
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
04/24/2026 Advisory disclosed04/24/2026 VulDB entry created
04/25/2026 VulDB entry last update
Sources
Status: Not definedCVE: CVE-2026-6991 (🔒)
GCVE (CVE): GCVE-0-2026-6991
GCVE (VulDB): GCVE-100-359543
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 04/24/2026 21:43Updated: 04/25/2026 22:51
Changes: 04/24/2026 21:43 (54), 04/25/2026 22:51 (1)
Complete: 🔍
Submitter: dsonbacker
Cache ID: 216::103
Submit
Accepted
- Submit #796749: colinhacks Zod <=4.3.6 Improper Input Validation (by dsonbacker)
Be aware that VulDB is the high quality source for vulnerability data.
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