Postiz: TOCTOU DNS rebinding bypasses all SSRF URL validation paths
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| gitroomhq | postiz-app | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Gitroomhq | Postiz-app |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.224% probability within 30 days)
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| First Time appeared |
Gitroomhq
Gitroomhq postiz-app |
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| Vendors & Products |
Gitroomhq
Gitroomhq postiz-app |
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| Description | Postiz is an AI social media scheduling tool. From version 2.16.6 to before version 2.21.7, all SSRF protections added in v2.21.4–v2.21.6 share a fundamental TOCTOU (Time-of-Check-Time-of-Use) vulnerability: isSafePublicHttpsUrl() resolves DNS to validate the target IP, but subsequent fetch() calls resolve DNS independently. An attacker controlling a DNS server can exploit this gap via DNS rebinding to redirect requests to internal network addresses. This issue has been patched in version 2.21.7. | |
| Title | Postiz: TOCTOU DNS rebinding bypasses all SSRF URL validation paths | |
| Weaknesses | CWE-918 | |
| References |
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| Metrics |
cvssV3_1
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