Medium severity · published Aug 21, 2026
CVE-2026-59323
Micrometer Tracing Brave Bridge W3C Baggage propagation DoS vulnerability
5.3
CVSS
0.4%
EPSS
No
On KEV
Description
An application using Micrometer Tracing with W3C baggage propagation in the Brave bridge is vulnerable to denial of service (DoS) due to unbounded object allocation when extracting incoming baggage headers.
Micrometer Tracing 1.7.0
Micrometer Tracing 1.6.0 - 1.6.6
Micrometer Tracing 1.5.0 - 1.5.12
Micrometer Tracing 1.4.13 and earlier
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MT
Micrometer Tracing · Spring
1.7.0; 1.6.0 through 1.6.6; 1.5.0 through 1.5.12; through 1.4.13 · source: vendor