CVE-2016-6580 Details
Description
A HTTP/2 implementation built using any version of the Python priority library prior to version 1.2.0 could be targeted by a malicious peer by having that peer assign priority information for every possible HTTP/2 stream ID. The priority tree would happily continue to store the priority information for each stream, and would therefore allocate unbounded amounts of memory. Attempting to actually use a tree like this would also cause extremely high CPU usage to maintain the tree.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://python-hyper.org/priority/en/latest/security/CVE-2016-6580.html | CVE | MitigationVendor Advisory |
| http://www.securityfocus.com/bid/92311 | CVE | Third Party AdvisoryVDB Entry |
| https://python-hyper.org/priority/en/latest/security/CVE-2016-6580.html | [email protected] | MitigationVendor Advisory |
| http://www.securityfocus.com/bid/92311 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-399 | Resource Management Errors | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| python python priority library | 1.0.0 1.1.0 1.1.1 |
CPE
Remediation
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Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| May 6, 2026 | Status Change | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Jan 27, 2017 | Modified Analysis | [email protected] |
| Jan 13, 2017 | CVE Modified | [email protected] |
| Jan 11, 2017 | Initial Analysis | [email protected] |