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CRITICAL severity

Out-of-bounds Write in actix-webGHSA-7x36-h62w-vw65

CRITICAL

GHSA-7x36-h62w-vw65 is a critical-severity (CVSS 9.8) Out-of-bounds Write vulnerability in actix-web. A fix is available for actix-web — see the affected versions and patch details below.

Also known asCVE-2018-25024CVE-2018-25025CVE-2018-25026GHSA-9qj6-4rfq-vm84GHSA-fgfm-hqjw-3265GHSA-w65j-g6c7-g3m4
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs69th percentile — riskier than 69% of all scored CVEsHighest risk
0.00%0.60%1.19%1.79%0.4%1.3%Apr 26Aug 26Oct 26

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

How urgent is this, really

GHSA-7x36-h62w-vw65 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,987 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
🦀actix-web

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

An issue was discovered in the actix-web crate before 0.7.15 for Rust. It can add the Send marker trait to an object that cannot be sent between threads safely, leading to memory corruption.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.ioactix-weball versions0.7.19cargo update -p actix-web --precise 0.7.19

Affected Products

1 product · 1 configurations
Application
actix-webactix
< 0.7.15
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update actix-web to 0.7.19 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7x36-h62w-vw65 is resolved across your whole dependency graph.

  3. Workarounds

    Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable.

Frequently Asked Questions

An issue was discovered in the actix-web crate before 0.7.15 for Rust. It can add the Send marker trait to an object that cannot be sent between threads safely, leading to memory corruption.
O3 Security · Impact-Aware SCA

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Out-of-bounds Write in actix-web (Critical 9.8)