GHSA-x77x-7mmh-cxv3 — ncurses
Fix: RustSec/advisory-db#2427GHSA-x77x-7mmh-cxv3 is a security vulnerability in ncurses. No vendor fix is recorded yet; mitigation options are listed below.
ncurses exposes uninitialized memory in string reading functions
Real-World Exposure
ncursesReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
Description
Multiple string reading functions expose uninitialized memory by setting length to capacity when no null terminator is found.
This allows reading uninitialized memory which may contain sensitive data from previous allocations.
The ncurses-rs repository is archived and unmaintained.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | ncurses | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ncurses, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of ncurses has shipped for GHSA-x77x-7mmh-cxv3 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-x77x-7mmh-cxv3 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-x77x-7mmh-cxv3. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-x77x-7mmh-cxv3 in your dependencies?
O3 Security finds GHSA-x77x-7mmh-cxv3 across crates.io dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.