VDB-358300 · Submit #794601 · CVE-2026-6662

ericc-ch copilot-api up to 0.7.0 Token Endpoint src/server.ts cors cross-domain policy

Summaryinfo

A vulnerability described as critical has been identified in ericc-ch copilot-api up to 0.7.0. This affects the function cors of the file src/server.ts of the component Token Endpoint. Executing a manipulation can lead to cross-domain policy. This vulnerability is registered as CVE-2026-6662. It is possible to launch the attack remotely. Furthermore, an exploit is available.

Detailsinfo

A vulnerability classified as critical was found in ericc-ch copilot-api up to 0.7.0. This vulnerability affects the function cors of the file src/server.ts of the component Token Endpoint. The manipulation with an unknown input leads to a cross-domain policy vulnerability. The CWE definition for the vulnerability is CWE-942. The product uses a cross-domain policy file that includes domains that should not be trusted. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-6662. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

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-2026-23923). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Automation Software

Vendor

ericc-ch

Name

copilot-api

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross-domain policy
CWE: CWE-942 / CWE-346 / CWE-345
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/20/2026 Advisory disclosed
04/20/2026 +0 days VulDB entry created
04/20/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2026-6662 (🔒)
GCVE (CVE): GCVE-0-2026-6662
GCVE (VulDB): GCVE-100-358300
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/20/2026 14:06
Updated: 04/20/2026 21:57
Changes: 04/20/2026 14:06 (56), 04/20/2026 21:57 (1)
Complete: 🔍
Submitter: Yu_Bao
Cache ID: 216::103

Submitinfo

Accepted

Submit #794601: ericc-ch copilot-api 0.7.0 Cross-Origin Token Theft via Wildcard CORS & Open Token Endpoint (by Yu_Bao)