CVSS 3.1
4.3 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NCVE-2026-116321 PostgreSQL unterminated name value discloses server memory
Medium (4.3). EPSS 0.3% estimated probability of exploitation activity in the next 30 days.
On this page
Improper null termination in PostgreSQL array element assignment allows a database user to disclose server memory, via changing the final byte of a fixed-length name value to a nonzero byte and passing it to code that treats the value as a C string. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.
Severity
- EPSS
- 0.3% estimated probability of exploitation activity in the next 30 days; 22nd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-12. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-170 Improper Null Termination
- Published
- Modified
- Assigned by
- PostgreSQL (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
Ask an AI about this CVE
Show the prompt
Explain CVE-2026-116321 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-116321?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-116321?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-116321 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Badge for a README or a site
An image that stays current: it is drawn from the data each time it is fetched (a host that proxies images, as GitHub does, may show its copy for a while). Markdown:
[](https://cve.bz/cve/CVE-2026-116321)
HTML:
<a href="https://cve.bz/cve/CVE-2026-116321"><img src="https://cve.bz/cve/badge/CVE-2026-116321.svg" alt="CVE-2026-116321"></a>
Fix and patched versions
- Debian, Red Hat, Alpine: fixed package versions per release
Linux distributions
| Distribution | Release | Package | Fixed in | Advisory |
|---|---|---|---|---|
| Debian | 12 | postgresql-15 | no fix listed | DEBIAN-CVE-2026-116321 |
| Debian | 13 | postgresql-17 | 17.12-0+deb13u1 | DEBIAN-CVE-2026-116321 |
| Debian | 14 | postgresql-18 | no fix listed | DEBIAN-CVE-2026-116321 |
| Ubuntu | 20.04:LTS | postgresql-12 | no fix listed | UBUNTU-CVE-2026-116321 |
| Ubuntu | 22.04:LTS | postgresql-14 | no fix listed | UBUNTU-CVE-2026-116321 |
| Ubuntu | 24.04:LTS | postgresql-16 | no fix listed | UBUNTU-CVE-2026-116321 |
| Ubuntu | 26.04:LTS, 26.10 | postgresql-18 | no fix listed | UBUNTU-CVE-2026-116321 |
| Ubuntu | Pro:14.04:LTS | postgresql-9.3 | no fix listed | UBUNTU-CVE-2026-116321 |
| Ubuntu | Pro:16.04:LTS | postgresql-9.5 | no fix listed | UBUNTU-CVE-2026-116321 |
| Ubuntu | Pro:18.04:LTS | postgresql-10 | no fix listed | UBUNTU-CVE-2026-116321 |
| Red Hat | hummingbird:1 | libpq, libpq-devel | 0:18.7-0.1.hum1 | RHSA-2026:99821 |
| Alpine | v3.21, v3.22 | postgresql15 | 15.20-r0 | ALPINE-CVE-2026-116321 |
| Alpine | v3.21, v3.22, v3.23 and 1 more | postgresql16 | 16.16-r0 | ALPINE-CVE-2026-116321 |
| Alpine | v3.21, v3.22, v3.23 and 1 more | postgresql17 | 17.12-r0 | ALPINE-CVE-2026-116321 |
| Alpine | v3.23, v3.24 | postgresql18 | 18.7-r0 | ALPINE-CVE-2026-116321 |
| Azure Linux | 3 | postgresql | no fix listed | AZL-113720 |
From the distributions' data via OSV.dev: the Debian Security Tracker; Ubuntu Security Notices © Canonical Ltd., CC BY-SA 4.0; Red Hat Security Data © Red Hat, Inc., CC BY 4.0; the Alpine secdb, CC BY-SA 4.0; Microsoft's Azure Linux vulnerability data, MIT. Modified: reformatted and linked to CVE records. Credits. On the distributions' own pages: Debian · Ubuntu · Red Hat · Alpine.
Red Hat
Red Hat rates this Moderate.
This vulnerability is rated as Moderate because exploitation is restricted to authenticated database sessions and only impacts confidentiality through information disclosure, without enabling data modification or denial of service. Under standard Red Hat Enterprise Linux configurations, PostgreSQL services are accessible solely to authorized clients who possess valid database credentials. An attacker authenticated to the database can craft queries manipulating array structures with fixed-length identifier values to read adjacent server memory. Because execution requires valid login credentials and cannot compromise system integrity or execute arbitrary code, the blast radius remains limited to sensitive memory contents.
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Hardened Images | libpq | Affected | |
| Red Hat Hardened Images | postgresql17 | Affected | |
| Red Hat Hardened Images | postgresql18 | Affected |
Contains Red Hat Security Data © Red Hat, Inc., licensed under CC BY 4.0. Source: https://access.redhat.com/security/data. Modified: reformatted. Red Hat's page for CVE-2026-116321.