How severe is GHSA-pjj3-j5j6-qj27?

No CVSS score has been assigned to GHSA-pjj3-j5j6-qj27 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-pjj3-j5j6-qj27?

GHSA-pjj3-j5j6-qj27 affects the following packages: @haxtheweb/haxcms-nodejs (npm). Ecosystems affected: npm.

How do I fix GHSA-pjj3-j5j6-qj27?

Update @haxtheweb/haxcms-nodejs to 11.0.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-pjj3-j5j6-qj27 is resolved across your whole dependency graph.

How do I detect GHSA-pjj3-j5j6-qj27 in my npm dependencies?

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

How do I mitigate GHSA-pjj3-j5j6-qj27 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-pjj3-j5j6-qj27 actively exploited in the wild?

No public exploit code has been indexed for GHSA-pjj3-j5j6-qj27 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-pjj3-j5j6-qj27?

GHSA-pjj3-j5j6-qj27 has an EPSS (Exploit Prediction Scoring System) score of 0.5%, placing it in the 41th 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-pjj3-j5j6-qj27?

GHSA-pjj3-j5j6-qj27 is classified as Improper Input Validation (CWE-20), CWE-248 (CWE-248), CWE-703 (CWE-703). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-pjj3-j5j6-qj27 published, and has it been updated?

GHSA-pjj3-j5j6-qj27 was published on July 21, 2025 and was last updated on July 21, 2025. 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

HAX CMS NodeJS Application Has Improper Error Handling That Leads to Denial of ServiceGHSA-pjj3-j5j6-qj27

Fix: haxtheweb/haxcms-nodejs@e9773d1

GHSA-pjj3-j5j6-qj27 is a Improper Input Validation vulnerability in @haxtheweb/haxcms-nodejs. A fix is available for @haxtheweb/haxcms-nodejs — see the affected versions and patch details below.

Also known asCVE-2025-54134

Published

Jul 21, 2025

Updated

Jul 21, 2025

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.

Exploitation and automatability from CISA’s SSVC triage for GHSA-pjj3-j5j6-qj27.

EPSS Exploitation Probability

via FIRST.org ↗

0.5%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs41th percentile — riskier than 41% of all scored CVEsHighest risk

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

Real-World Exposure

1 pkg 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

@haxtheweb/haxcms-nodejsnpm

1Kdownloads / week

Description

Summary

The HAX CMS NodeJS application crashes when an authenticated attacker provides an API request lacking required URL parameters. This vulnerability affects the listFiles and saveFiles endpoints.

Details

This vulnerability exists because the application does not properly handle exceptions which occur as a result of changes to user-modifiable URL parameters.

Affected Resources

• listFiles.js:22 listFiles() • saveFile.js:52 saveFile() • system/api/listFiles • system/api/saveFile

PoC

Targeting an instance of instance of HAX CMS NodeJS, send a request without parameters to listFiles or saveFiles. The following screenshot shows the request in Burp Suite.
The server will crash with ERR_INVALID_ARG_TYPE.

Impact

An authenticated attacker can deny access to the HAX CMS NodeJS application by crashing the backend server. This prevents all users from accessing the backend system. If the backend system is hosting websites, those websites will be unavailable.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`@haxtheweb/haxcms-nodejs`	all versions	11.0.9`npm install @haxtheweb/haxcms-nodejs@11.0.9`

Affected Products

1 product · 1 configurations

Application

haxcms-nodejspsu

< 11.0.9

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @haxtheweb/haxcms-nodejs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update @haxtheweb/haxcms-nodejs to 11.0.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-pjj3-j5j6-qj27 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

### Summary The HAX CMS NodeJS application crashes when an authenticated attacker provides an API request lacking required URL parameters. This vulnerability affects the `listFiles` and `saveFiles` endpoints. ### Details This vulnerability exists because the application does not properly handle exceptions which occur as a result of changes to user-modifiable URL parameters. #### Affected Resources • [listFiles.js:22](https://github.com/haxtheweb/haxcms-nodejs/blob/main/src/routes/listFiles.js#L22) listFiles() • [saveFile.js:52](https://github.com/haxtheweb/haxcms-nodejs/blob/main/src/routes/

O3 Security · Impact-Aware SCA

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