CVE Explorer
CVE-2026-2836
A cache poisoning vulnerability has been found in the Pingora HTTP proxy framework’s default cache key construction. The issue occurs because the default HTTP cache key implementation generates cache keys using only the URI path, excluding critical factors such as the host header (authority). Operators relying on the default are vulnerable to cache poisoning, and cross-origin responses may be improperly served to users.
Impact
This vulnerability affects users of Pingora's alpha proxy caching
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"https://github.com/cloudflare/pingora","repo":"https://github.com/cloudflare/pingora","vendor":"Cloudflare","versions":[{"lessThan":"0.8.0","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:6102b1820f74a0278f0c8b724d213f7fde21fc48195f108ce0641d50fc7e939d · sha256:832f8c4aae575e99… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.4,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:6102b1820f74a0278f0c8b724d213f7fde21fc48195f108ce0641d50fc7e939d · sha256:832f8c4aae575e99… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-345","description":"CWE-345 Insufficient Verification of Data Authenticity","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:6102b1820f74a0278f0c8b724d213f7fde21fc48195f108ce0641d50fc7e939d · sha256:832f8c4aae575e99… · /containers/adp/0/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://github.com/cloudflare/pingora"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:6102b1820f74a0278f0c8b724d213f7fde21fc48195f108ce0641d50fc7e939d · sha256:832f8c4aae575e99… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.