CVE report
CVE-2026-54236medium
vLLM <= 0.23.0 - Anthropic Router Heap Address Information Leak
Events 90d
24
Distinct IPs
4
Severity
medium
CISA KEV
Not listed
Detection signature
An event counts toward CVE-2026-54236 when its URL path contains any of these (case-insensitive). This is what our matching is based on.
- · /v1/messages
Pre-disclosure activity
all early actors →Analysing probe history around the publication date…
Recent probe volume (last 7 days)
peak: 15 events/dayeventsdistinct IPs
Downloads & integrations
Top sources probing for CVE-2026-54236
Top networks the attempts come from
Fingerprints of the clients exploiting this
The HTTP (JA4H) and TLS (JA4) fingerprints seen on these attempts. Click one to see the whole population that carries it.
Sample request paths observed
- /anthropic/v1/messages
- /v1/messages