CVE-2026-2581
Severity
5.9MEDIUM
EPSS
0.0%
top 94.96%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMar 12
Latest updateMar 13
Description
This is an uncontrolled resource consumption vulnerability (CWE-400) that can lead to Denial of Service (DoS).
In vulnerable Undici versions, when interceptors.deduplicate() is enabled, response data for deduplicated requests could be accumulated in memory for downstream handlers. An attacker-controlled or untrusted upstream endpoint can exploit this with large/chunked responses and concurrent identical requests, causing high memory usage and potential OOM process termination.
Impacted users a…
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.2 | Impact: 3.6
Affected Packages4 packages
🔴Vulnerability Details
4OSV▶
Undici has Unbounded Memory Consumption in its DeduplicationHandler via Response Buffering that leads to DoS↗2026-03-13
GHSA▶
Undici has Unbounded Memory Consumption in its DeduplicationHandler via Response Buffering that leads to DoS↗2026-03-13
CVEList▶
undici is vulnerable to Unbounded Memory Consumption in in Undici's DeduplicationHandler via Response Buffering leads to DoS↗2026-03-12
OSV▶
CVE-2026-2581: This is an uncontrolled resource consumption vulnerability (CWE-400) that can lead to Denial of Service (DoS)↗2026-03-12
📋Vendor Advisories
2🕵️Threat Intelligence
1💬Community
1Bugzilla
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