GHSA-j3w3-p6mr-3hrh
DynFuture Drop Can Construct a Dangling Reference
GHSA-j3w3-p6mr-3hrh is a medium vulnerability (CVSS 6.3) in dyn-future, published January 21, 2026. No source lists public exploit code. No source names a fixed version.
- Severity
- 6.3 MediumCVSS 4.0, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
DynFuture is unsound because its Drop implementation transmutes a trait-object reference into unrelated reference types, which constructs an invalid reference from trait object metadata.
This issue was reproduced against dyn-future 3.0.4 under Miri. The crate is unmaintained.
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
- Low
- Integrity
- Low
- Availability
- None
Affected packages
| Package | Affected | Fixed |
|---|---|---|
dyn-futurecrates.io | through 3.0.4 | None known |
dyn-futurecrates.io | 0.0.0-0 and later | None known |
What each source reports
GitHub Advisories Score used
DynFuture Drop Can Construct a Dangling Reference
DynFuture is unsound because its Drop implementation transmutes a trait-object reference into unrelated reference types, which constructs an invalid reference from trait object metadata.
This issue was reproduced against dyn-future 3.0.4 under Miri. The crate is unmaintained.
- Record
GHSA-j3w3-p6mr-3hrh- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-843
- Updated
- 2026-11-02
OSV
DynFuture Drop Can Construct a Dangling Reference
DynFuture is unsound because its Drop implementation transmutes a trait-object reference into unrelated reference types, which constructs an invalid reference from trait object metadata.
This issue was reproduced against dyn-future 3.0.4 under Miri. The crate is unmaintained.
- Record
GHSA-j3w3-p6mr-3hrh- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-843
- Updated
- 2026-11-02
OSVRUSTSEC-2026-0079No score
`DynFuture` drop can construct a dangling reference
DynFuture is unsound because its Drop implementation transmutes a trait-object reference into unrelated reference types, which constructs an invalid reference from trait object metadata.
This issue was reproduced against dyn-future 3.0.4 under Miri. And the crate is unmaintained.
- Record
RUSTSEC-2026-0079- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.