How severe is GHSA-86mr-6m89-vgj3?

No CVSS score has been assigned to GHSA-86mr-6m89-vgj3 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-86mr-6m89-vgj3?

GHSA-86mr-6m89-vgj3 affects the following packages: node-weakauras-parser (npm), node-weakauras-parser (npm), node-weakauras-parser (npm). Ecosystems affected: npm.

How do I fix GHSA-86mr-6m89-vgj3?

Update node-weakauras-parser to 1.0.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-86mr-6m89-vgj3 is resolved across your whole dependency graph.

How do I detect GHSA-86mr-6m89-vgj3 in my npm dependencies?

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

How do I mitigate GHSA-86mr-6m89-vgj3 if there is no patch (or I can't update yet)?

Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Is GHSA-86mr-6m89-vgj3 actively exploited in the wild?

No public exploit code has been indexed for GHSA-86mr-6m89-vgj3 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.

When was GHSA-86mr-6m89-vgj3 published, and has it been updated?

GHSA-86mr-6m89-vgj3 was published on September 3, 2020 and was last updated on October 4, 2021. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

Buffer Overflow in node-weakauras-parserGHSA-86mr-6m89-vgj3

Fix: Zireael-N/node-weakauras-parser@bc146da

GHSA-86mr-6m89-vgj3 is a remote code execution vulnerability in node-weakauras-parser. A fix is available for node-weakauras-parser — see the affected versions and patch details below.

Published

Sep 3, 2020

Updated

Oct 4, 2021

Affected

3 pkgs

Patched

3 / 3

Exploits

None indexed

Exploitation data as of Oct 4, 2021 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

3 pkgs affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

1other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

node-weakauras-parsernpm

461downloads / week

Description

Affected versions of node-weakauras-parser are vulnerable to a Buffer Overflow. The encode_weakaura function fails to properly validate the input size. A buffer of 13835058055282163711 bytes causes an overflow on 64-bit systems.

Recommendation

Upgrade to versions 1.0.5, 2.0.2, 3.0.1 or later.

Affected Packages

3 total 3 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`node-weakauras-parser`	≥ 1.0.4&&< 1.0.5	1.0.5`npm install node-weakauras-parser@1.0.5`
📦npm	`node-weakauras-parser`	≥ 2.0.0&&< 2.0.2	2.0.2`npm install node-weakauras-parser@2.0.2`
📦npm	`node-weakauras-parser`	≥ 3.0.0&&< 3.0.1	3.0.1`npm install node-weakauras-parser@3.0.1`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for node-weakauras-parser, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update node-weakauras-parser to 1.0.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-86mr-6m89-vgj3 is resolved across your whole dependency graph.
Workarounds
Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Frequently Asked Questions

Affected versions of `node-weakauras-parser` are vulnerable to a Buffer Overflow. The `encode_weakaura` function fails to properly validate the input size. A buffer of 13835058055282163711 bytes causes an overflow on 64-bit systems. ## Recommendation Upgrade to versions 1.0.5, 2.0.2, 3.0.1 or later.

O3 Security · Impact-Aware SCA

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