How severe is GHSA-qg5g-gv98-5ffh?

No CVSS score has been assigned to GHSA-qg5g-gv98-5ffh yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-qg5g-gv98-5ffh?

GHSA-qg5g-gv98-5ffh affects the following packages: rustls (crates.io). Ecosystems affected: crates.io.

How do I fix GHSA-qg5g-gv98-5ffh?

Update rustls to 0.23.18 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qg5g-gv98-5ffh is resolved across your whole dependency graph.

How do I detect GHSA-qg5g-gv98-5ffh in my crates.io dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for rustls, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-qg5g-gv98-5ffh if there is no patch (or I can't update yet)?

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.

Is GHSA-qg5g-gv98-5ffh actively exploited in the wild?

No public exploit code has been indexed for GHSA-qg5g-gv98-5ffh yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-qg5g-gv98-5ffh?

GHSA-qg5g-gv98-5ffh has an EPSS (Exploit Prediction Scoring System) score of 0.7%, placing it in the 55th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-qg5g-gv98-5ffh?

GHSA-qg5g-gv98-5ffh is classified as CWE-248 (CWE-248). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-qg5g-gv98-5ffh published, and has it been updated?

GHSA-qg5g-gv98-5ffh was published on November 25, 2024 and was last updated on September 10, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🦀 crates.io

Not in CISA KEV

rustls network-reachable panic in `Acceptor::accept`GHSA-qg5g-gv98-5ffh

GHSA-qg5g-gv98-5ffh is a CWE-248 vulnerability in rustls. A fix is available for rustls — see the affected versions and patch details below.

Also known asCVE-2024-11738RUSTSEC-2024-0399

Published

Nov 25, 2024

Updated

Sep 10, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA’s SSVC triage for GHSA-qg5g-gv98-5ffh.

EPSS Exploitation Probability

via FIRST.org ↗

0.7%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs55th percentile — riskier than 55% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

🦀rustls

Real-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

A bug introduced in rustls 0.23.13 leads to a panic if the received TLS ClientHello is fragmented. Only servers that use rustls::server::Acceptor::accept() are affected.

Servers that use tokio-rustls's LazyConfigAcceptor API are affected.

Servers that use tokio-rustls's TlsAcceptor API are not affected.

Servers that use rustls-ffi's rustls_acceptor_accept API are affected.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🦀crates.io	`rustls`	≥ 0.23.13&&< 0.23.18	0.23.18`cargo update -p rustls --precise 0.23.18`

Affected Products

1 product · 1 configurations

Application

rustlsrustls_project

1 version

0.23.13

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for rustls, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update rustls to 0.23.18 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qg5g-gv98-5ffh is resolved across your whole dependency graph.
Workarounds
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.

Frequently Asked Questions

A bug introduced in rustls 0.23.13 leads to a panic if the received TLS ClientHello is fragmented. Only servers that use `rustls::server::Acceptor::accept()` are affected. Servers that use `tokio-rustls`'s `LazyConfigAcceptor` API are affected. Servers that use `tokio-rustls`'s `TlsAcceptor` API are not affected. Servers that use `rustls-ffi`'s `rustls_acceptor_accept` API are affected.

O3 Security · Impact-Aware SCA

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