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Medium, CVSS 5.5amended

request-filtering-agent SSRF Bypass via HTTPS Requests to 127.0.0.1

CVE-2025-57814GHSA-pw25-c82r-75mm

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (request-filtering-agent 2.0.0), 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
5.5 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P · score source
EPSS
  • CVE-2025-57814: 0.46% estimated exploitation activity in the next 30 days; percentile 39.76 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

request-filtering-agent versions 1.x.x and earlier contain a vulnerability where HTTPS requests to 127.0.0.1 bypass IP address filtering, while HTTP requests are correctly blocked. Impact: Vulnerable patterns (requests that should be blocked but are allowed): - https://127.0.0.1:443/api - https://127.0.0.1:8443/admin - Any HTTPS request using direct IP address https://127.0.0.1 This vulnerability primarily affects services using self-signed certificates on 127.0.0.1. Not affected (correctly blocked in all versions): - http://127.0.0.1:80/api - HTTP requests are properly blocked - https://localhost:443/api - Domain-based requests trigger DNS lookup and are blocked - http://localhost:80/api - Domain-based HTTP requests are blocked - Requests to other private IPs like 192.168.x.x, 10.x.x.x, 172.16.x.x This allows attackers to potentially access internal HTTPS services running on localhost, bypassing the library's SSRF protection. The vulnerability is particularly dangerous when the…

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

    Amended from ghsa record GHSA-pw25-c82r-75mm

  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-pw25-c82r-75mm

Agent brief

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# Patch Next advisory brief: CVE-2025-57814

Advisory: request-filtering-agent SSRF Bypass via HTTPS Requests to 127.0.0.1
IDs: CVE-2025-57814, GHSA-pw25-c82r-75mm
Record: https://patchnext.com/advisories/cve-2025-57814 (revision 3, source checked 26 Oct 2026, 12:37 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: request-filtering-agent 2.0.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm request-filtering-agent: affected < 2.0.0; fixed in 2.0.0

## Suggested inspection (read-only)
- `npm ls request-filtering-agent --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 request-filtering-agent.
- 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-pw25-c82r-75mm (OSV record GHSA-pw25-c82r-75mm lists affected ranges: npm request-filtering-agent >=0 <2.0.0 (fixed))
- Verified: https://github.com/advisories/GHSA-pw25-c82r-75mm (GitHub-reviewed advisory GHSA-pw25-c82r-75mm lists affected ranges: npm request-filtering-agent >=0 <2.0.0)

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