GHSA-2944-57XV-2682

Vulnerability from github – Published: 2026-07-02 19:07 – Updated: 2026-07-02 19:07
VLAI
Summary
@asymmetric-effort/specifyjs: `data:` URI allowed without size restriction
Details

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.

Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@asymmetric-effort/specifyjs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.136"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-02T19:07:44Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Finding\n\n**Location**: `core/src/shared/secure-fetch.ts:33-35`\n\n`data:` URIs were allowed without any restriction. While `data:` URIs don\u0027t make network requests, they can be used for memory exhaustion via very large data URIs.\n\n## Status\n\n**Fixed in v0.2.136** \u2014 `data:` URIs are now limited to 1MB. URIs exceeding this limit throw an error.",
  "id": "GHSA-2944-57xv-2682",
  "modified": "2026-07-02T19:07:44Z",
  "published": "2026-07-02T19:07:44Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/asymmetric-effort/specifyjs/security/advisories/GHSA-2944-57xv-2682"
    },
    {
      "type": "WEB",
      "url": "https://github.com/asymmetric-effort/specifyjs/commit/25d1fb491d99479efdf501f5f75e0bb80c908f0a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/asymmetric-effort/specifyjs"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "@asymmetric-effort/specifyjs: `data:` URI allowed without size restriction"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.