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VulnerabilityPublished

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

Affects @asymmetric-effort/specifyjsSource GCVE Database

0

CVSS 6.9 Medium : upgrade to 0.2.136 when convenient.

Data as of 3 Jul 2026, 22:49 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 0.2.136
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

What to do

Upgrade @asymmetric-effort/specifyjs to 0.2.136.

Affected software

ProductAffectedFixed in
npm@asymmetric-effort/specifyjsAffected
  • <0.2.136
Fixed in
  • 0.2.136

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AI-suggested

Upgrade to @asymmetric-effort/specifyjs version 0.2.136 or later, where data: URIs are limited to 1MB and larger URIs throw an error. This official fix effectively mitigates the vulnerability.

Description

## 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.

References

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