Unathenticated connection can hold Bolt channel open
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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| neo4j | Enterprise Edition | unaffected |
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| neo4j | Community Edition | unaffected |
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Configuration 1 [-]
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No data.
| Vendor | Product | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Neo4j | Community Edition |
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| Neo4j | Enterprise Edition |
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No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.542% probability within 30 days)
| Link | Providers |
|---|---|
| https://neo4j.com/security/CVE-2026-14587 |
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Neo4j neo4j
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| CPEs | cpe:2.3:a:neo4j:neo4j:*:*:*:*:community:*:*:* cpe:2.3:a:neo4j:neo4j:*:*:*:*:enterprise:*:*:* |
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| Vendors & Products |
Neo4j neo4j
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| Metrics |
cvssV3_1
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Neo4j
Neo4j community Edition Neo4j enterprise Edition |
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| Vendors & Products |
Neo4j
Neo4j community Edition Neo4j enterprise Edition |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Neo4j's Bolt modern handshake decoder treats an overlong capability bit mask the same way it treats a truncated bit mask. When an unauthenticated client sends a selected protocol version followed by 32 continuation bytes in the capability mask, the decoder resets the reader index and waits for more bytes instead of rejecting the protocol message and closing the channel. Because the same unread bytes remain at the front of the decoder buffer, appending a terminating byte later does not recover the connection. The decoder re-reads the same first 32 continuation bytes, returns without producing a handshake-finalization message, and leaves the channel open. This can be triggered before authentication by any client that can reach the Bolt connector. | |
| Title | Unathenticated connection can hold Bolt channel open | |
| Weaknesses | CWE-130 | |
| References |
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| Metrics |
cvssV4_0
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