8.8

CVE-2026-4525: hashicorp vault

CVSS: 8.8v3.1HighModified
AliasesCGA-93w5-rxv9-7wp3CGA-jghv-gp7m-h8wvCGA-rfq2-j5j6-8vpp
Published 17-04-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2026-4525 is a high (CVSS 8.8) vulnerability in hashicorp vault. EPSS estimates a 0.59% chance of exploitation in the next 30 days, higher than 47.2% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
0.59%
0%100%
Low · +0.18 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-Q7QC-8PRW-38QG

Timeline

  1. 17-04-2026
    PublishedVulnerability first disclosed.
  2. 15-07-2026
    Last modifiedVulnerability information updated.

Description

If a Vault auth mount is configured to pass through the "Authorization" header, and the "Authorization" header is used to authenticate to Vault, Vault forwarded the Vault token to the auth plugin backend. Fixed in 2.0.0, 1.21.5, 1.20.10, and 1.19.16.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.59%

Chance of exploitation in the next 30 days

Percentile

47%

Versus all other CVEs

30-day change

+0.18 pp

From 0.41% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.59%

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≥ 0.11.2, < 1.19.16 | ≥ 0.11.2, < 2.0.0 | ≥ 1.20.0, < 1.20.10 | ≥ 1.21.0, < 1.21.5
  • vault enterprise≥ 0.11.2, < 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≥ 0.11.2, ≤ 1.21.4 | ≥ 0.11.2 (No fix recorded)

4 vendors · 18 products

References

8 links