Uncontrolled resource consumption in Meta Proxygen
Priority MEDIUM 42CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-400.
Summary
A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 priority settings (specifically a circular dependency). This affects Proxygen prior to v2018.12.31.00.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0137 72nd percentileScored 2026-11-07
Fix Fixed Proxygen (Facebook): v2018.12.31.00
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| Meta | Proxygen | v2018.12.31.00; before v2018.12.31.00 | v2018.12.31.00 | Patch available | CNA |
- Proxygen VendorMeta Affected v2018.12.31.00; before v2018.12.31.00 Fixed in v2018.12.31.00 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:proxygen_project:proxygen:*:*:*:*:*:*:*:* | before 2018.12.31.00 | Vulnerable | Proxygen Project |
- cpe:2.3:a:proxygen_project:proxygen:*:*:*:*:*:*:*:* Versions before 2018.12.31.00 Vulnerable ·Proxygen Project
Remediation
- Fix · CNA Proxygen (Facebook) Fixed in v2018.12.31.00
Timeline
- 2026-10-02 Threatist record created from CVE-2018-6346
- 2026-10-03 Alias added: GHSA-gvqg-4vgr-vq39
References
More Meta vulnerabilities
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- TI-2019-02633 Heap-based buffer overflow in Meta WhatsApp for Android KEVCVSS 3.1CRITICAL 9.8
- TI-2019-13416 Cross-site scripting in Meta WhatsApp Desktop KEVCVSS 3.1HIGH 8.2
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2025-34857 Incorrect authorization in Meta WhatsApp Desktop for Mac KEVCVSS 3.1MEDIUM 5.4
- TI-2025-34863 Deserialization of untrusted data in Meta react-server-dom-webpack CVSS 3.1HIGH 7.5
Sources
- CVE-2018-6346 · CVE Program
- CVE-2018-6346 · NVD
- FIRST EPSS
- GHSA-gvqg-4vgr-vq39 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences