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Medium, CVSS 6.9amended

@asymmetric-effort/specifyjs: data: URI allowed without size restriction

GHSA-2944-57xv-2682

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (@asymmetric-effort/specifyjs 0.2.136), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
6.9 · 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 · score source
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

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.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-2944-57xv-2682

  2. Revision 2 · amended ·

    Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

  3. Revision 1 · created ·

    Published from osv record GHSA-2944-57xv-2682

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: GHSA-2944-57xv-2682

Advisory: @asymmetric-effort/specifyjs: `data:` URI allowed without size restriction
IDs: GHSA-2944-57xv-2682
Record: https://patchnext.com/advisories/ghsa-2944-57xv-2682 (revision 3, source checked 26 Oct 2026, 12:56 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @asymmetric-effort/specifyjs 0.2.136. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @asymmetric-effort/specifyjs: affected < 0.2.136; fixed in 0.2.136

## Suggested inspection (read-only)
- `npm ls @asymmetric-effort/specifyjs --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on @asymmetric-effort/specifyjs.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-2944-57xv-2682 (OSV record GHSA-2944-57xv-2682 lists affected ranges: npm @asymmetric-effort/specifyjs >=0 <0.2.136 (fixed))
- Verified: https://github.com/advisories/GHSA-2944-57xv-2682 (GitHub-reviewed advisory GHSA-2944-57xv-2682 lists affected ranges: npm @asymmetric-effort/specifyjs >=0 <0.2.136)

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