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Fencer Intel
medium 5.9

CVE-2026-125333 json

Forge: ReDoS in forge.http response header and cookie trimming

published 8d ago modified yesterday also EUVD-2026-122793 , GHSA-6cv4-p8m7-4r25

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. From 0.1.2 until 1.4.3, forge.http uses _trimString() in lib/http.js to remove trailing whitespace from response header values and cookie names and values with a regular expression that can take quadratic time. A malicious server or on-path attacker can supply a long whitespace run followed by a non-whitespace character in a response header, causing response.readHeader() or response.getCookies() to repeatedly scan the input and block the Node.js event loop or browser tab for minutes. Applications are affected only when they use forge.http with a socket pool to communicate with an untrusted server; forge.http is not loaded by require('node-forge'), and the issue has no confidentiality or integrity impact. This issue is fixed in version 1.4.3.

Patch / fix

  • npm node-forge 1.4.3

Is CVE-2026-125333 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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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-125333 updated cvss 5.9

node-forge: node-forge: Denial of Service via inefficient regular expression in HTTP header parsing

  • Red Hat Node HealthCheck Operator workload-availability/node-remediation-console-rhel8, workload-availability/node-healthcheck-rhel9-operator, workload-availability/node-healthcheck-operator-bundle, workload-availability/node-healthcheck-must-gather-rhel9
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat OpenShift Pipelines openshift-pipelines/pipelines-hub-ui-rhel9 Red Hat OpenShift Serverless openshift-serverless-1/logic-rhel9-operator
    affected: workaround, no fix available “Fix deferred”
  • Red Hat OpenShift Service Mesh 3 openshift-service-mesh/kiali-rhel9-operator, openshift-service-mesh/kiali-operator-bundle
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat 3scale API Management Platform 2 3scale-amp2/system-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-24/lightspeed-rhel8, automation-eda-controller 1.0.10-0.1.20260317.git9cae940.el8ap Red Hat Ceph Storage 4 rhceph/rhceph-4-dashboard-rhel8
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Connectivity Link 1 rhcl-1/rhcl-rhdh-dynamic-plugin-rhel9 Red Hat Developer Hub 1 rhdh/rhdh-hub-rhel9, rhdh/red-hat-developer-hub-backstage-plugin-lightspeed-backend, rhdh/red-hat-developer-hub-backstage-plugin-orchestrator-backend Red Hat Developer Hub 2 rhdh/rhdh-hub-rhel10, rhdh/backstage-community-plugin-tech-radar-backend, rhdh/backstage-plugin-catalog-backend-module-gitlab, rhdh/red-hat-developer-hub-backstage-plugin-quickstart, rhdh/backstage-plugin-catalog-backend-module-gitlab-org, rhdh/red-hat-developer-hub-backstage-plugin-global-header, +6 more Red Hat Enterprise Linux 8 pcs, pcs-snmp, pcs 0.12.0-3.el10_0.5 Red Hat Enterprise Linux 9 pcs, pcs-snmp, pcs 0.12.0-3.el10_0.5 Red Hat Enterprise Linux 10 pcs 0.12.0-3.el10_0.5
    +2 more products
    Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-cuda-rhel9, rhelai3/bootc-rocm-rhel9, rhelai3/bootc-gaudi-rhel9, rhelai3/disk-image-cuda-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-feature-server-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Quay 3 quay/quay-rhel8, quay/quay-rhel9
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Self-service automation portal 2 ansible-automation-platform/automation-portal, ansible-automation-platform/bootc-automation-portal-rhel9
    affected: workaround, no fix available “Fix deferred”
show 1 more
  • Red Hat AMQ Broker 7 amq-broker-bin.zip 7.14.2.CR1, amq-broker-maven-repository.zip 7.14.2.CR1 Red Hat Ansible Automation Platform 2 automation-controller 4.5.39-1.el9ap, automation-platform-ui 2.6.15-1.el9ap, automation-gateway 2.5.20260923-1.el9ap Red Hat build of Apache Camel for Spring Boot 4 rhaf-camel-spring-boot-maven-repository.zip 4.18.4.CS6, rhaf-camel-for-springboot-maven-repository.zip 3.5.16.CS2 Red Hat Build of Podman Desktop rh-podman-desktop 3c6fc75a2a6cf5bb9b8a667fddcbbf428132badc Red Hat Enterprise Linux 8 grafana, grafana-loki, grafana-mssql, grafana-mysql, grafana-selinux, grafana-graphite, +9 more Red Hat Enterprise Linux 9 grafana, grafana-selinux, grafana 12.4.3-2.el10
    +3 more products
    Red Hat Enterprise Linux 10 grafana 12.4.3-2.el10 Red Hat Fuse 7 redhat-fuse-sources.zip 7.13.0, redhat-fuse-maven-repository.zip 7.13.0 Red Hat Hardened Images grafana13.1 13.1.9-0.1.hum1, grafana13.2 13.2.4-0.7.hum1, grafana12.4 12.4.13-0.6.hum1
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
yesterday

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • github.com https://github.com/digitalbazaar/forge/security/advisories/GHSA-6cv4-p8m7-4r25 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
npm node-forge
>=0.1.2, <1.4.3
1.4.3

Affected products

  • digitalbazaar forge

Classification

Weakness
  • CWE-1333 Inefficient Regular Expression Complexity

References

Sources

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.

The maintainers of digitalbazaar/forge published their own advisory on GitHub. Reviewed sources take precedence over it.