RUSTSEC-2026-0173 proc-macro-error2 is unmaintained
The proc-macro-error2 crate is unmaintained, posing supply chain risks; developers should migrate to maintained alternatives like manyhow.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not stated
- Fix
- None listed
What is RUSTSEC-2026-0173?
RUSTSEC-2026-0173 is a vulnerability in proc-macro-error2, published on 7 Jun 2026.
Official description
The author of proc-macro-error2 has confirmed that the crate is no longer maintained and recommends that users migrate away from it.
proc-macro-error2 was originally created as a maintained fork of proc-macro-error (see RUSTSEC-2024-0370). Both the original crate and this fork are now unmaintained.
Possible Alternative(s)
Which versions are affected by RUSTSEC-2026-0173?
1 open source package ship an affected version, including proc-macro-error2.
| Package | Affected | Fixed in |
|---|---|---|
proc-macro-error2 crates.io | From 0.0.0-0 | None |
How do I fix RUSTSEC-2026-0173?
No fix has been published for RUSTSEC-2026-0173 yet. Limit exposure of the affected software until one is available.
Is RUSTSEC-2026-0173 being exploited?
There is no known exploitation of RUSTSEC-2026-0173 in the wild and no public exploit code.