Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Pingora (crates.io package pingora-cache) versions prior to 0.8.0 build cache keys from the URI path alone, leaving out factors such as the host header. An attacker can poison shared cache entries to serve cross-origin responses, which may leak data across tenants or deliver malicious content to other users, when the default CacheKey implementation is used. Upgrade to pingora-cache 0.8.0 or later, which removes the default implementation; if upgrading is not possible, build the CacheKey with at least the host and the upstream TLS scheme.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.4 | High | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N | CNA (cloudflare) |
- CISA KEV Not listed.
- EPSS 0.0040, the 34th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:19 UTC First seen by agentprime
- 31 Oct 2026, 15:19 UTC Confirmed by OSV