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

published 2026-07-02 4mo ago modified 2026-09-10 2mo ago

cvss: —; not scored
cisa kev: Not listed; not in CISA's catalog
epss: —; no score, EPSS covers CVEs only
public exploits: 0; none known

## 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.

Patch / fix

fixed in 1 links 1

npm @asymmetric-effort/specifyjs 0.2.136

github.com/asymmetric-effort/specifyjs@25d1fb4 commit

Is GHSA-2944-57xv-2682 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Affected packages

ecosystem	package	affected	fixed in
npm	@asymmetric-effort/specifyjs	<0.2.136	0.2.136

Classification

Weakness

CWE-918 Server-Side Request Forgery

References

Sources

GitHub Advisory GHSA-2944-57xv-2682

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.