Metrics
Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Mon, 10 Aug 2026 12:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Memos' webhook URL validation, isReservedIP() (internal/webhook/validate.go), checks a candidate IP against a reservedCIDRs list that omits 0.0.0.0/8 and never calls ip.IsUnspecified() — unlike the correctly implemented sibling function isInternalIP() in internal/httpgetter/html_meta.go, which does. Because Linux redirects connections to 0.0.0.0 to loopback (127.0.0.1), an attacker registering a webhook URL of http://0.0.0.0:PORT/ bypasses the reserved-IP check and causes the Memos server to make outbound HTTP requests to its own loopback interface, exposing internal-only services. | Memos' webhook URL validation, isReservedIP (internal/webhook/validate.go), checks a candidate IP against a reservedCIDRs list that omits 0.0.0.0/8 and never calls ip.IsUnspecified — unlike the correctly implemented sibling function isInternalIP in internal/httpgetter/html_meta.go, which does. |
| Title | Memos - Webhook SSRF via 0.0.0.0 Reserved-IP Bypass | Memos Webhook SSRF via 0.0.0.0 Reserved-IP Bypass |
Mon, 10 Aug 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Memos Webhook SSRF via 0.0.0.0 Reserved-IP Bypass | Memos - Webhook SSRF via 0.0.0.0 Reserved-IP Bypass |
Wed, 05 Aug 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 05 Aug 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Usememos
Usememos memos |
|
| Vendors & Products |
Usememos
Usememos memos |
Wed, 05 Aug 2026 13:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Memos' webhook URL validation, isReservedIP() (internal/webhook/validate.go), checks a candidate IP against a reservedCIDRs list that omits 0.0.0.0/8 and never calls ip.IsUnspecified() — unlike the correctly implemented sibling function isInternalIP() in internal/httpgetter/html_meta.go, which does. Because Linux redirects connections to 0.0.0.0 to loopback (127.0.0.1), an attacker registering a webhook URL of http://0.0.0.0:PORT/ bypasses the reserved-IP check and causes the Memos server to make outbound HTTP requests to its own loopback interface, exposing internal-only services. | |
| Title | Memos Webhook SSRF via 0.0.0.0 Reserved-IP Bypass | |
| Weaknesses | CWE-918 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: TuranSec
Published:
Updated: 2026-08-10T11:46:46.139Z
Reserved: 2026-08-05T12:23:34.967Z
Link: CVE-2026-71271
Updated: 2026-08-05T15:38:07.117Z
Status : Received
Published: 2026-08-05T13:24:51.447
Modified: 2026-08-10T12:17:29.587
Link: CVE-2026-71271
No data.
OpenCVE Enrichment
Updated: 2026-08-10T20:30:05Z