Resource allocation without limits in Meta Mcrouter
Priority LOW 36CWE-770Published · 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 · NVD. Fix status from CNA. Impact type from CWE-770.
Summary
In Mcrouter prior to v0.41.0, the deprecated ASCII parser would allocate a buffer to a user-specified length with no maximum length enforced, allowing for resource exhaustion or denial of service.
Why it matters now
EPSS 0.01451 73rd percentileScored 2026-11-07
Fix Fixed Mcrouter (Facebook): 0.41.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Mcrouter (Facebook) Fixed in 0.41.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Facebook Mcrouter 0.41.0
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2019-08942 Uncontrolled recursion in Meta McrouterPriority LOW 36
Timeline
- 2026-10-02 Threatist record created from CVE-2019-11923
- 2026-10-03 Alias added: GHSA-wjxh-p937-x4v8
References
More Meta Mcrouter vulnerabilities
- TI-2019-08942 Uncontrolled recursion in Meta Mcrouter CVSS 3.1HIGH 7.5
Sources
- CVE-2019-11923 · CVE Program
- CVE-2019-11923 · NVD
- FIRST EPSS
- GHSA-wjxh-p937-x4v8 · GitHub Advisory Database · CC BY 4.0
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