GHSA-wwq9-3cpr-mm53
Borsh serialization of HashMap is non-canonical
The borsh serialization of the HashMap did not follow the borsh specification. It potentially produced non-canonical encodings dependent on insertion order. It also did not perform canonicty checks on decoding.
This can result in consensus splits and cause equivalent objects to be considered distinct.
This was patched in 0.15.1.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
What each source reports
GitHub Advisories Score used
Borsh serialization of HashMap is non-canonical
The borsh serialization of the HashMap did not follow the borsh specification. It potentially produced non-canonical encodings dependent on insertion order. It also did not perform canonicty checks on decoding.
This can result in consensus splits and cause equivalent objects to be considered distinct.
This was patched in 0.15.1.
- Record
GHSA-wwq9-3cpr-mm53- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P - Weakness
- CWE-502
- Updated
- 2026-11-02
OSV
Borsh serialization of HashMap is non-canonical
The borsh serialization of the HashMap did not follow the borsh specification. It potentially produced non-canonical encodings dependent on insertion order. It also did not perform canonicty checks on decoding.
This can result in consensus splits and cause equivalent objects to be considered distinct.
This was patched in 0.15.1.
- Record
GHSA-wwq9-3cpr-mm53- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P - Weakness
- CWE-502
- Updated
- 2026-11-02
OSVRUSTSEC-2024-0402No score
Borsh serialization of HashMap is non-canonical
The borsh serialization of the HashMap did not follow the borsh specification. It potentially produced non-canonical encodings dependent on insertion order. It also did not perform canonicty checks on decoding.
This can result in consensus splits and cause equivalent objects to be considered distinct.
This was patched in 0.15.1.
- Record
RUSTSEC-2024-0402- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
hashbrowncrates.io | 0.15.0 up to 0.15.1 | 0.15.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-wwq9-3cpr-mm53 is a high vulnerability (CVSS 8.9) in hashbrown, published October 11, 2024. No source lists public exploit code. Fixed in hashbrown 0.15.1.