CVE-2026-2003
CVE-2026-2003 is a medium-severity vulnerability in Postgresql with a CVSS 3.x base score of 4.3. 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-1287.
Key facts
- Severity: Medium (CVSS 3.x base score 4.3)
- EPSS exploit prediction: 0% (20th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-7039
- Weakness: CWE-1287
- Affected product: Postgresql
- Published:
- Last modified:
Description
Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
Frequently asked questions
- What is CVE-2026-2003?
- Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
- How severe is CVE-2026-2003?
- CVE-2026-2003 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2026-2003 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-2003?
- CVE-2026-2003 affects Postgresql. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-2003?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-2003 have an EU (EUVD) identifier?
- Yes. CVE-2026-2003 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7039.
- When was CVE-2026-2003 published?
- CVE-2026-2003 was published on 2026-02-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
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