Is github.com/hashicorp/vault affected by CVE-2026-5052?

Go github.com/hashicorp/vault is affected in >=1.14.0 <=1.21.4.

Is CVE-2026-5052 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.3%.

medium

CVE-2026-5052

Q: Is CVE-2026-5052 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.3%.

Go · github.com/hashicorp/vault

Summary

HashiCorp Vault has Server-Side Request Forgery in ACME Challenge Validation via Attacker-Controlled DNS

Severity: medium
EPSS: 0.3% (p25)
Also known as: GHSA-8r5m-3f66-qpr3, BIT-vault-2026-5052
Published: 2026-04-17

References

https://nvd.nist.gov/vuln/detail/CVE-2026-5052
https://discuss.hashicorp.com/t/hcsec-2026-06-vault-vulnerable-to-server-side-request-forgery-in-acme-challenge-validation-via-attacker-controlled-dns/77343
https://github.com/hashicorp/vault

Related advisories

CVE-2026-5807 — high · Go/github.com/hashicorp/vault
CVE-2026-3605 — high · Go/github.com/hashicorp/vault
CVE-2026-4525 — high · Go/github.com/hashicorp/vault

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.