VulnerabilityPublished 13 Aug 2026Updated 29 Aug 2026

CVE-2026-6470: PostgreSQL · Missing Authorization

Affects PostgreSQLSource CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium · fixed in 18.6 : update PostgreSQL when convenient.

Data as of 11 Nov 2026, 23:24 UTC

CVSS 3.1 base score

4.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 26% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 18.6, 17.11, 16.15 +3

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 13 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
PostgreSQL	Affected >=18 <18.6	Fixed in 18.6
PostgreSQL	Affected >=17 <17.11	Fixed in 17.11
PostgreSQL	Affected >=16 <16.15	Fixed in 16.15
PostgreSQL	Affected >=15 <15.19	Fixed in 15.19
PostgreSQL	Affected <14.24	Fixed in 14.24
Postgresqlpostgresql/postgresql`pkg:deb/postgresql/postgresql`Other threats	Affected <14.24 <15.19 <16.15 <17.11 <18.5	Fixed in 14.24 15.19 16.15 17.11 18.5

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in PostgreSQL versions 18.6, 17.11, 16.15, 15.19, and 14.24 and later. Users should upgrade to these or later versions to remediate the vulnerability.

Description

CVE-2026-6470 is a medium severity vulnerability in PostgreSQL affecting versions prior to 18.6, 17.11, 16.15, 15.19, and 14.24. It involves missing authorization checks in certain DDL commands related to types, allowing an object creator to cause denial of service by creating dependencies that prevent ALTER and DROP operations on the type. The vulnerability does not impact confidentiality or integrity but can cause availability issues.

Impact

The impact is limited to denial of service (availability) by preventing legitimate ALTER and DROP operations on affected types due to unauthorized dependencies. There is no impact on confidentiality or integrity.

Summary

This vulnerability arises from missing authorization checks in PostgreSQL's handling of DDL commands involving types. While many DDL operations properly check privileges, assigning a range subtype and referencing the type from an SQL expression did not enforce authorization. This flaw allows an object creator to create dependencies on the type, which can lead to denial of service by blocking ALTER and DROP operations on that type. The issue affects PostgreSQL versions before 18.6, 17.11, 16.15, 15.19, and 14.24.

References

postgresql.org/support/security/CVE-2026-6470/ (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 13 Sep 2026, 13:04 UTC

Technical details

References

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