Waline login accepts a non-string email as a match-all MongoDB query
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| walinejs | waline | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
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| Waline | Waline |
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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% (0.262% probability within 30 days)
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ssvc
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| First Time appeared |
Waline
Waline waline |
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| Vendors & Products |
Waline
Waline waline |
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| Description | Waline is a comment system with backend support. Prior to version 1.41.1, the login endpoint POST /api/token reads the email field from the request body without checking its type and passes it straight into the MongoDB storage query. When email is not a string (for example a JSON object such as {"$ne": null}), the MongoDB storage adapter's parseWhere silently DROPS the field rather than rejecting the request, producing an empty filter that matches ALL users. The endpoint then verifies the submitted password against the FIRST user returned (user[0]), which in Waline is the first-registered user — the site administrator. This is a PARTIAL authentication bypass, not a full one. The attacker still needs a valid password for that first user; this is not a zero-knowledge bypass and it does not disclose passwords. Its concrete effects are: (1) the email/identifier factor is removed for the administrator account, (2) user enumeration (a non-string email never fails the "no such user" branch), and (3) credential-stuffing amplification — an attacker can test a leaked or weak password against the administrator account without knowing the administrator's email. This issue has been patched in version 1.41.1. | |
| Title | Waline login accepts a non-string email as a match-all MongoDB query | |
| Weaknesses | CWE-287 CWE-943 |
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| Metrics |
cvssV3_1
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