HashiCorp Vault and Vault Enterprise inbound client requests triggering a policy check can lead to an unbounded consumption of memory. A large number of these requests may lead to denial-of-service. Fixed in Vault 1.15.2, 1.14.6, and 1.13.10.
CVE-2023-5954
This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 30% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 5.9(medium)
- EPSS
- 49.5%
- KEV
- Not listed
Published
November 9, 2023
Last Modified
June 17, 2026
References (4)
- security@hashicorphttps://discuss.hashicorp.com/t/hcsec-2023-33-vault-requests-triggering-policy-checks-may-lead-to-unbounded-memory-consumption/59926
- security@hashicorphttps://security.netapp.com/advisory/ntap-20231227-0001/
- af854a3a-2127-422b-91ae-364da2661108https://discuss.hashicorp.com/t/hcsec-2023-33-vault-requests-triggering-policy-checks-may-lead-to-unbounded-memory-consumption/59926
- af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20231227-0001/
Vendor Advisories for CVE-2023-5954(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | openshift4/ose-installer-rhel9:v4.17.0-202409122204.p0.gdfd4c08.assembly.stream.el9 | 2024-10-01 | redhat |
| redhat | odf4/mcg-rhel9-operator:v4.15.0-39 | 2024-03-19 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
Go(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/hashicorp/vault | — | 1.15.2 | — |
Data Freshness Timeline
(refreshed 10× in last 7d / 43× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:26 UTCEPSS rescore
- 2026-07-09 19:08 UTCEPSS rescore
- 2026-07-08 15:13 UTCEPSS rescore
- 2026-07-07 13:45 UTCEPSS rescore
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- 2026-06-30 23:21 UTCEPSS rescore
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- 2026-06-28 14:06 UTCEPSS rescore
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- 2026-06-28 04:55 UTCEPSS rescore
- 2026-06-27 05:07 UTCOSV refresh
- 2026-06-27 03:07 UTCEPSS rescore
- 2026-06-25 13:48 UTCEPSS rescore
- 2026-06-25 13:48 UTCEPSS rescore
- 2026-06-24 14:04 UTCEPSS rescore
- 2026-06-24 14:04 UTCEPSS rescore
- 2026-06-24 06:29 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
- 2026-06-23 21:31 UTCEPSS rescore
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- 2026-06-23 21:31 UTCEPSS rescore
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- 2026-06-11 13:59 UTCEPSS rescore
- 2026-06-10 22:17 UTCEPSS rescore
- 2026-06-10 13:21 UTCEPSS rescore
- 2026-06-09 15:47 UTCOSV refresh
- 2026-06-08 14:16 UTCEPSS rescore
- 2026-06-08 14:16 UTCEPSS rescore
- 2026-06-07 15:24 UTCEPSS rescore
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- 2026-05-29 13:43 UTCEPSS rescore
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- 2026-05-27 13:40 UTCEPSS rescore
- 2026-05-27 13:39 UTCEPSS rescore
- 2026-05-26 13:43 UTCEPSS rescore
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- 2026-05-26 07:18 UTCEPSS rescore
- 2026-05-26 07:18 UTCEPSS rescore
- 2026-05-24 14:12 UTCEG score recompute
- 2026-05-24 14:12 UTCVendor advisory
Frequently asked(5)
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