How severe is GHSA-7cwq-p8cr-h9qg?

GHSA-7cwq-p8cr-h9qg has a CVSS score of 5.3/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-7cwq-p8cr-h9qg?

GHSA-7cwq-p8cr-h9qg affects the following packages: buttercup (npm). Ecosystems affected: npm.

How do I fix GHSA-7cwq-p8cr-h9qg?

Update buttercup to 7.4.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7cwq-p8cr-h9qg is resolved across your whole dependency graph.

How do I detect GHSA-7cwq-p8cr-h9qg in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for buttercup. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate GHSA-7cwq-p8cr-h9qg 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.

How does O3 Security protect against GHSA-7cwq-p8cr-h9qg?

O3 pinpoints whether GHSA-7cwq-p8cr-h9qg is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-7cwq-p8cr-h9qg actively exploited in the wild?

Yes. There are 1 known exploit references for GHSA-7cwq-p8cr-h9qg, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for GHSA-7cwq-p8cr-h9qg?

GHSA-7cwq-p8cr-h9qg has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 32th 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-7cwq-p8cr-h9qg?

GHSA-7cwq-p8cr-h9qg is classified as CWE-916 (CWE-916). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-7cwq-p8cr-h9qg published, and has it been updated?

GHSA-7cwq-p8cr-h9qg was published on September 8, 2023 and was last updated on December 13, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

GHSA-7cwq-p8cr-h9qg

MEDIUM

Buttercup allows attackers to obtain the hash of the master password

Also known asCVE-2023-41646

Published

Sep 8, 2023

Updated

Dec 13, 2023

Affected

1 pkg

Patched

1 / 1

Exploits

1 known

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk32th percentile+0.34%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.

buttercupnpm

509downloads / week

Description

Buttercup allows attackers to obtain the hash of the master password for the password manager via accessing the file /vaults.json/.

This affects the Buttercup app up to version 2.20.3.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`buttercup`	≥ 2.20.3&&< 7.4.0	7.4.0

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Buttercup v2.20.3 allows attackers to obtain the hash of the master pass…

github.comNVDSep 2023

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for buttercup. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update buttercup to 7.4.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7cwq-p8cr-h9qg 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.
How O3 protects you
O3 pinpoints whether GHSA-7cwq-p8cr-h9qg is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-7cwq-p8cr-h9qg. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Buttercup allows attackers to obtain the hash of the master password for the password manager via accessing the file /vaults.json/. This affects the Buttercup app up to version 2.20.3.

O3 Security · Impact-Aware SCA

Is GHSA-7cwq-p8cr-h9qg in your dependencies?

O3 detects GHSA-7cwq-p8cr-h9qg across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works