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Vulnerability record · CVE-2026-5052 · published 17 April 2026

CVE-2026-5052: Hashicorp vault server-side request forgery (ssrf) vulnerability

Hashicorp · Vault

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.

8.6 CVSS 3.1 High EPSS 0.39% · top 69.6% CWE-918 · Server-side request forgery (SSRF)
8.6CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://discuss.hashicorp.com/t/hcsec-2026-06-vault-vulnerable-to-server-side-request-forgery-in-acme-challenge-validati Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-5052), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.