Description
go-spacemesh is a Go implementation of the Spacemesh protocol full node. Nodes can publish activations transactions (ATXs) which reference the incorrect previous ATX of the Smesher that created the ATX. ATXs are expected to form a single chain from the newest to the first ATX ever published by an identity. Allowing Smeshers to reference an earlier (but not the latest) ATX as previous breaks this protocol rule and can serve as an attack vector where Nodes are rewarded for holding their PoST data for less than one epoch but still being eligible for rewards. This vulnerability is fixed in go-spacemesh 1.5.2-hotfix1 and Spacemesh API 1.37.1.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_confirm
https://github.com/spacemeshos/go-spacemesh/security/advisories/GHSA-jcqq-g64v-gcm7
Patch x_refsource_misc
https://github.com/spacemeshos/api/commit/1d5bd972bbe225d024c3e0ae5214ddb6b481716e
Scores
CVSS v3
8.2
EPSS
0.0009
EPSS Percentile
26.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-754
Status
published
Products (3)
spacemeshos/api
0 - 1.37.1Go
spacemeshos/go-spacemesh
0 - 1.5.2-hotfix1Go
spacemeshos/go-spacemesh
< 1.5.2-hotfix1
Published
May 14, 2024
Tracked Since
Feb 18, 2026