Medium severity · published Jun 2, 2026
CVE-2026-45682
OpenTelemetry eBPF Instrumentation: CappedConcurrentHashMap leaks keys after removals
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the custom CappedConcurrentHashMap introduced for Java TLS state tracking never removes keys from its insertion-order queue when entries are deleted. In long-running instrumented JVMs, repeated connection churn can therefore grow the queue without bound and exhaust heap memory. This issue has been patched in version 0.9.0.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
opentelemetry-ebpf-instrumentation · open-telemetry
< 0.9.0 · source: vendor
EI
Ebpf Instrumentation · Opentelemetry
before 0.9.0 · source: NVD
Affected product
OP
opentelemetry-ebpf-instrumentation
open-telemetry
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45682
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45682
Product
https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0
Exploit
https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-962q-hwm5-52x5
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