High severity · published Jul 17, 2026
CVE-2026-50274
dd-trace-go: Improper parsing of W3C baggage headers may lead to DoS
7.5
CVSS
0.8%
EPSS
No
On KEV
Description
Datadog dd-trace-go is a Go client library for Datadog application performance monitoring, profiling, and security monitoring. Prior to 2.8.1, Datadog tracing libraries that implement W3C baggage propagation parse incoming baggage HTTP headers without enforcing DD_TRACE_BAGGAGE_MAX_ITEMS or DD_TRACE_BAGGAGE_MAX_BYTES limits on the extract path. A remote, unauthenticated attacker can send a request whose baggage header contains an arbitrarily large number of comma-separated key-value pairs or a single very large value, causing unbounded CPU and memory consumption and enabling a remote denial of service against HTTP services with baggage propagation enabled. This issue is fixed in version 2.8.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DD
dd-trace-go · DataDog
< 2.8.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-50274
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-50274
github.com
https://github.com/DataDog/dd-trace-go/commit/192712ba0291b2e89166259111ebb5e90c8f52df
github.com
https://github.com/DataDog/dd-trace-go/pull/4720
github.com
https://github.com/DataDog/dd-trace-go/releases/tag/v2.8.1
github.com
https://github.com/DataDog/dd-trace-go/security/advisories/GHSA-74j5-xf3v-crq8
