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CVE-2026-55202

Tinyproxy through 1.11.3, fixed in commit 09312a1, fails to properly validate the Host header during stathost detection, allowing unauthenticated attackers to access the stats page by injecting a matching Host header or bypass detection via port manipulation. Remote attackers can trigger unauthorized access to internal proxy statistics or misroute requests as transparent proxy connections to circumvent access controls.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1a37e1aca90f2cd1a9ce84a02c0ad7c135ebaa77c85565425c07f4363c231d28
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:1a958a46a39b5f10a0db05834bbae59f476400381318c9ff23fdf1d9830cc0b8 · sha256:ff7bdeccb7d18784… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:1a958a46a39b5f10a0db05834bbae59f476400381318c9ff23fdf1d9830cc0b8 · sha256:ff7bdeccb7d18784… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:github/tinyproxy/tinyproxy","product":"tinyproxy","repo":"https://github.com/tinyproxy/tinyproxy","vendor":"tinyproxy","versions":[{"lessThanOrEqual":"1.11.3","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"09312a185ae25cc486b4ff5987638a7917a48bce","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1a958a46a39b5f10a0db05834bbae59f476400381318c9ff23fdf1d9830cc0b8 · sha256:ff7bdeccb7d18784… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:1a958a46a39b5f10a0db05834bbae59f476400381318c9ff23fdf1d9830cc0b8 · sha256:ff7bdeccb7d18784… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:1a958a46a39b5f10a0db05834bbae59f476400381318c9ff23fdf1d9830cc0b8 · sha256:ff7bdeccb7d18784… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-290","description":"Authentication Bypass by Spoofing","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1a958a46a39b5f10a0db05834bbae59f476400381318c9ff23fdf1d9830cc0b8 · sha256:ff7bdeccb7d18784… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"Patch Commit","tags":["patch"],"url":"https://github.com/tinyproxy/tinyproxy/commit/09312a185ae25cc486b4ff5987638a7917a48bce"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1a958a46a39b5f10a0db05834bbae59f476400381318c9ff23fdf1d9830cc0b8 · sha256:ff7bdeccb7d18784… · /containers/cna/references/1
{"name":"Pull Request","tags":["issue-tracking"],"url":"https://github.com/tinyproxy/tinyproxy/pull/606"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1a958a46a39b5f10a0db05834bbae59f476400381318c9ff23fdf1d9830cc0b8 · sha256:ff7bdeccb7d18784… · /containers/cna/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/evil-winrm-path-traversal-in-download-dir-function"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1a958a46a39b5f10a0db05834bbae59f476400381318c9ff23fdf1d9830cc0b8 · sha256:ff7bdeccb7d18784… · /containers/cna/references/2

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.

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