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MEDIUM severity

GHSA-7hh3-3x64-v2g9 — remult

MEDIUMFix: remult/remult@6892ae9

GHSA-7hh3-3x64-v2g9 is a medium-severity (CVSS 5) CWE-284 vulnerability in remult. A fix is available for remult — see the affected versions and patch details below.

When setting EntityOptions.apiPrefilter to a function, the filter is not applied to API requests for a resource by Id

Also known asCVE-2023-35167
Published
Jun 20, 2023
Updated
Sep 10, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Sep 21, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-7hh3-3x64-v2g9.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs44th percentile — riskier than 44% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

How urgent is this, really

GHSA-7hh3-3x64-v2g9 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.

Where this sits among everything scored

Of 379,145 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

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.

9other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
remultnpm
3Kdownloads / week

Description

Impact

If you used the apiPrefilter option of the @Entity decorator, by setting it to a function that returns a filter that prevents unauthorized access to data, an attacker who knows the id of an entity instance she is not authorized to access, can gain read, update and delete access to it.

Patches

The issue is fixed in version 0.20.6

Workarounds

Set the apiPrefilter option to a filter object instead of a function.

References

If you're using a minor version < 0.20 and require a patch, please create an issue.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmremultall versions0.20.6npm install remult@0.20.6

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for remult, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update remult to 0.20.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7hh3-3x64-v2g9 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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-7hh3-3x64-v2g9 can be triaged on real exposure rather than presence alone.

Tailored to GHSA-7hh3-3x64-v2g9. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact If you used the [apiPrefilter](https://remult.dev/docs/ref_entity.html#apiprefilter) option of the `@Entity` decorator, by setting it to a function that returns a filter that prevents unauthorized access to data, an attacker who knows the `id` of an entity instance she is not authorized to access, can gain read, update and delete access to it. ### Patches The issue is fixed in version 0.20.6 ### Workarounds Set the `apiPrefilter` option to a filter object instead of a function. ### References If you're using a minor version < 0.20 and require a patch, please create an issue.
O3 Security · Impact-Aware SCA

Is GHSA-7hh3-3x64-v2g9 in your dependencies?

O3 Security finds GHSA-7hh3-3x64-v2g9 across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-7hh3-3x64-v2g9: remult (Medium 5) | O3 Security