In http-proxy-middleware before 2.0.8 and 3.x before 3.0.4, writeBody can be called twice because "else if" is not used.
Priority LOW 24CWE-670Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 2 fixed, 20 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat.
Summary
In http-proxy-middleware before 2.0.8 and 3.x before 3.0.4, writeBody can be called twice because "else if" is not used.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00466 40th percentileScored 2026-11-07
Fix Partial http-proxy-middleware (chimurai): 2.0.8, 3.0.4http-proxy-middleware (npm): 2.0.8, 3.0.4Red Hat: 2 advisoriesRed Hat: 2 fixed, 20 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| chimurai | http-proxy-middleware | before 2.0.8; 3.0.0 to before 3.0.4 | 2.0.8, 3.0.4 | Patch available | CNA |
| — | http-proxy-middleware (npm) | 1.3.0 to before 2.0.8 | 2.0.8 | Patch available | GHSA-4www-5p9h-95mh |
| — | http-proxy-middleware (npm) | 3.0.0 to before 3.0.4 | 3.0.4 | Patch available | GHSA-4www-5p9h-95mh |
- http-proxy-middleware Vendorchimurai Affected before 2.0.8; 3.0.0 to before 3.0.4 Fixed in 2.0.8, 3.0.4 Patch available CNA
- http-proxy-middleware (npm) Vendor— Affected 1.3.0 to before 2.0.8 Fixed in 2.0.8 Patch available GHSA-4www-5p9h-95mh
- http-proxy-middleware (npm) Vendor— Affected 3.0.0 to before 3.0.4 Fixed in 3.0.4 Patch available GHSA-4www-5p9h-95mh
Remediation
- Fix · CNA http-proxy-middleware (chimurai) Fixed in 2.0.8, 3.0.4
- Fix · GHSA-4www-5p9h-95mh http-proxy-middleware (npm) Fixed in 2.0.8 Advisory →
- Fix · GHSA-4www-5p9h-95mh http-proxy-middleware (npm) Fixed in 3.0.4 Advisory →
Red Hat 2 advisories
- RHSA-2025:14090 Released 2025-08-19 · Red Hat rating ImportantRed Hat Developer Hub 1.7.0 release.
- Red Hat Developer Hub 1.7 registry.redhat.io/rhdh/rhdh-hub-rhel9, registry.redhat.io/rhdh/rhdh-rhel9-operator
- RHSA-2025:9966 Released 2025-06-30 · Red Hat rating ImportantRed Hat Developer Hub 1.6.2 release.
- Red Hat Developer Hub 1.6 registry.redhat.io/rhdh/rhdh-hub-rhel9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Cryostat 3 | Affected | No fix yet: Fix deferred |
| Cryostat 4 | Affected | No fix yet: Fix deferred |
| Migration Toolkit for Applications 7 | Affected | No fix yet: Fix deferred |
| Network Observability Operator | Affected | No fix yet: Fix deferred |
| OpenShift Lightspeed | Affected | No fix yet: Fix deferred |
| OpenShift Serverless | Affected | No fix yet: Fix deferred |
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Data Grid 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat Fuse 7 | Affected | No fix yet: Fix deferred |
| Red Hat Integration Camel K 1 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift distributed tracing 3 | Affected | No fix yet: Fix deferred |
| Red Hat Process Automation 7 | Affected | No fix yet: Fix deferred |
| Red Hat Quay 3 | Affected | No fix yet: Fix deferred |
| Red Hat Trusted Profile Analyzer | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel - HawtIO 4 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apicurio Registry 2 | Affected | No fix yet: Fix deferred |
| Red Hat build of OptaPlanner 8 | Affected | No fix yet: Fix deferred |
| Red Hat Developer Hub 1.6 | Fixed | RHSA-2025:9966 |
| Red Hat Developer Hub 1.7 | Fixed | RHSA-2025:14090 |
Not affected: 2 products
- Red Hat Developer Hub 1.6
- Red Hat Developer Hub 1.7
Timeline
- 2026-10-02 Threatist record created from CVE-2025-32996
- 2026-10-03 Alias added: GHSA-4www-5p9h-95mh
References
Patch 1
More chimurai Http-proxy-middleware vulnerabilities
- TI-2024-14292 Uncontrolled resource consumption in http-proxy-middleware CVSS 4.0HIGH 8.7
- TI-2026-40136 http-proxy-middleware `router` host+path substring matching allows Host-header-driven backend routing bypass CVSS 4.0MEDIUM 6.9
- TI-2026-40137 http-proxy-middleware: multipart/form-data field injection via unescaped CRLF in `fixRequestBody` CVSS 3.1HIGH 7.5
- TI-2025-24005 In http-proxy-middleware before 2.0.9 and 3.x before 3.0.5, fixRequestBody proceeds even if bodyParser has failed. CVSS 3.1MEDIUM 5.3
Sources
- CVE-2025-32996 · CVE Program
- CVE-2025-32996 · NVD
- FIRST EPSS
- GHSA-4www-5p9h-95mh · GitHub Advisory Database · CC BY 4.0
- CVE-2025-32996 · Red Hat security data · CC BY 4.0
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