OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. OpenBao before v2.3.0 may leak sensitive information in logs when processing malformed data. This is separate from the earlier HCSEC-2025-09 / CVE-2025-4166. This issue has been fixed in OpenBao v2.3.0 and later. Like with HCSEC-2025-09, there is no known workaround except to ensure properly formatted requests from all clients.
CVE-2025-52893
This medium-severity CVE scores 4.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 80% 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).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.5
- EG Score
- 4.5(medium)
- EG Risk
- 20(Track)EG Risk 20/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity45% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 23%
- KEV
- Not listed
Published
June 25, 2025
Last Modified
August 12, 2025
References (6)
- security-advisories@githubhttps://discuss.hashicorp.com/t/hcsec-2025-09-vault-may-expose-sensitive-information-in-error-logs-when-processing-malformed-data-with-the-kv-v2-plugin/74717
- security-advisories@githubhttps://github.com/go-viper/mapstructure/commit/ed3f92181528ff776a0324107b8b55026e93766a
- security-advisories@githubhttps://github.com/go-viper/mapstructure/pull/105
- security-advisories@githubhttps://github.com/go-viper/mapstructure/releases/tag/v2.3.0
- security-advisories@githubhttps://github.com/openbao/openbao/commit/cf5e920badbf96b41253534a3fd5ff5063bf4b30
- security-advisories@githubhttps://github.com/openbao/openbao/security/advisories/GHSA-8f5r-8cmq-7fmq
Affected Packages
(2 across 1 ecosystem)
Go(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/openbao/openbao/sdk | — | — | — |
| github.com/openbao/openbao/sdk/v2 | — | 2.3.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 30× 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.
Showing the most recent 100 of 150 total refreshes for this CVE.
- 2026-09-19 15:42 UTCEPSS rescore
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- 2026-08-25 09:41 UTCOSV refresh
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Related CVEs
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Frequently asked(5)
What is CVE-2025-52893?
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Is CVE-2025-52893 actively exploited?
What is the CVSS score of CVE-2025-52893?
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Dependency Blast Radius
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