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RUSTSEC-2026-0232
No affected components available
The processed events received from a relay through admission-policy and database paths before verifying that the serialized fields matched the claimed event ID and signature. In particular, a database result for the claimed ID could cause verification to be skipped. The verification cache also keyed successful checks by a 64-bit hash instead of the complete event ID.
A malicious relay could send an event whose claimed ID referred to a known database entry while its content, tags, author, or signature differed from that ID. The forged event could then reach policy callbacks or other SDK processing as if it were authentic. A cache-key collision provided a second path for an unverified event to be treated as previously verified. This undermines event integrity but does not reveal private keys or enable the attacker to produce a valid signature for the altered event.
The SDK now verifies each event before policy evaluation, database lookup, or
propagation decisions, and the verification cache stores the complete EventId so a
truncated hash collision cannot stand in for successful verification.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the integrity of the data.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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