---
id: GHSA-2944-57xv-2682
title: '@asymmetric-effort/specifyjs: `data:` URI allowed without size restriction'
summary: '@asymmetric-effort/specifyjs: `data:` URI allowed without size restriction'
severity: medium
cwe:
  - CWE-918
vendor: asymmetric-effort
product: '@asymmetric-effort/specifyjs'
ecosystem: npm
affected:
  - '@asymmetric-effort/specifyjs < 0.2.136'
patched:
  - '@asymmetric-effort/specifyjs 0.2.136'
published: '2026-07-02'
updated: '2026-07-02'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-2944-57xv-2682'
references:
  - url: >-
      https://github.com/asymmetric-effort/specifyjs/security/advisories/GHSA-2944-57xv-2682
  - url: >-
      https://github.com/asymmetric-effort/specifyjs/commit/25d1fb491d99479efdf501f5f75e0bb80c908f0a
  - url: 'https://github.com/advisories/GHSA-2944-57xv-2682'
tags:
  - ghsa
  - npm
ingestedAt: '2026-07-02T19:41:50.956Z'
---

## Overview

## Finding

**Location**: `core/src/shared/secure-fetch.ts:33-35`

`data:` URIs were allowed without any restriction. While `data:` URIs don't make network requests, they can be used for memory exhaustion via very large data URIs.

## Status

**Fixed in v0.2.136** — `data:` URIs are now limited to 1MB. URIs exceeding this limit throw an error.

## Affected packages

- `@asymmetric-effort/specifyjs < 0.2.136`

## Remediation

Upgrade to a patched release:

- `@asymmetric-effort/specifyjs 0.2.136`