Denial of service via malicious preflight requests in github.com/rs/cors
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| github.com/rs/cors | github.com/rs/cors | unaffected |
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No data.
No data.
| Vendor | Product | Versions |
|---|---|---|
| Golang | Cors | — |
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-23882 | Middleware causes a prohibitive amount of heap allocations when processing malicious preflight requests that include a Access-Control-Request-Headers (ACRH) header whose value contains many commas. This behavior can be abused by attackers to produce undue load on the middleware/server as an attempt to cause a denial of service. |
Github GHSA |
GHSA-mh55-gqvf-xfwm | Denial of service via malicious preflight requests in github.com/rs/cors |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.678% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Golang
Golang cors |
|
| Vendors & Products |
Golang
Golang cors |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
|
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-770 | |
| References |
| |
| Metrics |
threat_severity
|
cvssV3_1
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Middleware causes a prohibitive amount of heap allocations when processing malicious preflight requests that include a Access-Control-Request-Headers (ACRH) header whose value contains many commas. This behavior can be abused by attackers to produce undue load on the middleware/server as an attempt to cause a denial of service. | |
| Title | Denial of service via malicious preflight requests in github.com/rs/cors | |
| References |
|