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📦 npm
Not in CISA KEV

GHSA-j5qp-p44g-2m49 is a security vulnerability in @asymmetric-effort/specifyjs. O3 Security confirms whether GHSA-j5qp-p44g-2m49 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

@asymmetric-effort/specifyjs: No redirect target validation in secureFetch

Published
Jul 2, 2026
Updated
Sep 10, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Sep 10, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
@asymmetric-effort/specifyjsnpm
1Kdownloads / week

Description

Finding

Location: core/src/shared/secure-fetch.ts

assertSecureUrl validated only the initial request URL. The fetch() API follows redirects by default (up to 20 hops). A request to a valid https:// URL could redirect to http://internal-service/ or other unvalidated destinations.

Status

Fixed in v0.2.136secureFetch now defaults to redirect: 'error' which rejects any redirect. Callers can override with { redirect: 'follow' } if they trust the target.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npm@asymmetric-effort/specifyjsall versions0.2.136

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @asymmetric-effort/specifyjs. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update @asymmetric-effort/specifyjs to 0.2.136 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-j5qp-p44g-2m49 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-j5qp-p44g-2m49 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-j5qp-p44g-2m49. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

## Finding **Location**: `core/src/shared/secure-fetch.ts` `assertSecureUrl` validated only the initial request URL. The `fetch()` API follows redirects by default (up to 20 hops). A request to a valid `https://` URL could redirect to `http://internal-service/` or other unvalidated destinations. ## Status **Fixed in v0.2.136** — `secureFetch` now defaults to `redirect: 'error'` which rejects any redirect. Callers can override with `{ redirect: 'follow' }` if they trust the target.
O3 Security · Impact-Aware SCA

Is GHSA-j5qp-p44g-2m49 in your dependencies?

O3 detects GHSA-j5qp-p44g-2m49 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-j5qp-p44g-2m49: @asymmetric-effort/s… | O3 Security