CVE-2025-52893
CVE-2025-52893 is a medium-severity vulnerability in Openbao with a CVSS 3.x base score of 4.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-532.
Key facts
- Severity: Medium (CVSS 3.x base score 4.5)
- EPSS exploit prediction: 0% (19th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-19112
- Weakness: CWE-532
- Affected product: Openbao
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2025-52893?
- 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.
- How severe is CVE-2025-52893?
- CVE-2025-52893 has a CVSS 3.x base score of 4.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2025-52893 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-52893?
- CVE-2025-52893 affects Openbao. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-52893?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-52893 have an EU (EUVD) identifier?
- Yes. CVE-2025-52893 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19112.
- When was CVE-2025-52893 published?
- CVE-2025-52893 was published on 2025-06-25 and last updated on 2026-06-17.
References
- https://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
- https://github.com/go-viper/mapstructure/commit/ed3f92181528ff776a0324107b8b55026e93766a
- https://github.com/go-viper/mapstructure/pull/105
- https://github.com/go-viper/mapstructure/releases/tag/v2.3.0
- https://github.com/openbao/openbao/commit/cf5e920badbf96b41253534a3fd5ff5063bf4b30
- https://github.com/openbao/openbao/security/advisories/GHSA-8f5r-8cmq-7fmq
Affected products (1)
- cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*
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