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CVE-2026-5052

Vault’s PKI engine’s ACME validation did not reject local targets when issuing http-01 and tls-alpn-01 challenges. This may lead to these requests being sent to local network targets, potentially leading to information disclosure. Fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0, 1.21.5, 1.20.10, and 1.19.16.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:faa52e78f1892b8a5a752cfa229d6742940fe00278694493519be3c896cc53b5
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"product":"Vault","repo":"https://github.com/hashicorp/vault","vendor":"HashiCorp","versions":[{"lessThan":"2.0.0","status":"affected","version":"1.15.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9c83d094db3586de1582b29088b4f20a56520fce2b344a67314a13728fccc88d · sha256:ca852503f5323188… · /containers/cna/affected/0

{"defaultStatus":"unaffected","platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"product":"Vault Enterprise","repo":"https://github.com/hashicorp/vault","vendor":"HashiCorp","versions":[{"changes":[{"at":"1.19.16","status":"unaffected"},{"at":"1.20.10","status":"unaffected"},{"at":"1.21.5","status":"unaffected"}],"lessThan":"2.0.0","status":"affected","version":"1.15.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9c83d094db3586de1582b29088b4f20a56520fce2b344a67314a13728fccc88d · sha256:ca852503f5323188… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"product":"Vault","repo":"https://github.com/hashicorp/vault","vendor":"HashiCorp","versions":[{"lessThan":"2.0.0","status":"affected","version":"1.15.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9c83d094db3586de1582b29088b4f20a56520fce2b344a67314a13728fccc88d · sha256:ca852503f5323188… · /containers/cna/affected/0
{"defaultStatus":"unaffected","platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"product":"Vault Enterprise","repo":"https://github.com/hashicorp/vault","vendor":"HashiCorp","versions":[{"changes":[{"at":"1.19.16","status":"unaffected"},{"at":"1.20.10","status":"unaffected"},{"at":"1.21.5","status":"unaffected"}],"lessThan":"2.0.0","status":"affected","version":"1.15.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9c83d094db3586de1582b29088b4f20a56520fce2b344a67314a13728fccc88d · sha256:ca852503f5323188… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:9c83d094db3586de1582b29088b4f20a56520fce2b344a67314a13728fccc88d · sha256:ca852503f5323188… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9c83d094db3586de1582b29088b4f20a56520fce2b344a67314a13728fccc88d · sha256:ca852503f5323188… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://discuss.hashicorp.com/t/hcsec-2026-06-vault-vulnerable-to-server-side-request-forgery-in-acme-challenge-validation-via-attacker-controlled-dns/77343"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9c83d094db3586de1582b29088b4f20a56520fce2b344a67314a13728fccc88d · sha256:ca852503f5323188… · /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.

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