8.6

CVE-2026-5052: hashicorp vault Server-Side Request Forgery (SSRF)

CVSS: 8.6v3.1HighAnalyzed
AliasesCGA-m77q-7ghx-7wgmCGA-mqx9-2x5c-gf26CGA-v8rf-2rc7-x4jm
Published 17-04-2026Last modified 17-04-2026
Open JSON

Vulnerability summary

CVE-2026-5052 is a high (CVSS 8.6) Server-Side Request Forgery (SSRF) vulnerability in hashicorp vault. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31.7% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (NVD)
EPSS score
0.39%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 2
OPENSUSE-SU-2026:21483-1CGA-4P53-W327-CVJQ

Timeline

  1. 17-04-2026
    PublishedVulnerability first disclosed.
  2. 17-04-2026
    Last modifiedVulnerability information updated.

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 metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.39%

Chance of exploitation in the next 30 days

Percentile

32%

Versus all other CVEs

30-day change

+0.04 pp

From 0.34% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.39%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard13 products
  • splunk-otel-collector< 0.157.0-r0
  • splunk-otel-collector-compat< 0.160.0-r0
  • splunk-otel-collector-fips< 0.157.0-r0
  • vault-1.16All versions (No fix recorded)
  • vault-1.17All versions (No fix recorded)
Hashicorp2 products
  • vault≥ 1.15.0, < 2.0.0 | ≥ 1.14.0, < 1.19.16 | ≥ 1.14.0, < 2.0.0 | ≥ 1.20.0, < 1.20.10 | ≥ 1.21.0, < 1.21.5
  • vault enterprise≥ 1.15.0, < 2.0.0
Wolfi2 products
  • splunk-otel-collector< 0.157.0-r0
  • splunk-otel-collector-compat< 0.160.0-r0
Github.com/hashicorp1 product
  • vault≥ 1.14.0, ≤ 1.21.4 | ≥ 1.14.0 (No fix recorded)

4 vendors · 18 products

References

5 links