Skip to main content

PostgreSQL EUVDEUVD-2026-57851

| CVE-2026-18024 MEDIUM
Buffer Over-read (CWE-126)
2026-08-13 f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 GHSA-mpm7-fx5w-5w53
PostgreSQL Buffer Overflow
4.3
CVSS 3.1 · Vendor: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
Share

Severity by source

Vendor (f86ef6dc-4d3a-42ad-8f28-e6d5547a5007) PRIMARY
4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
vuln.today AI
4.3 MEDIUM

Network-reachable via SQL, low complexity, requires authenticated low-privilege DB user; only partial confidentiality impact from 3-byte heap leak.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
SUSE
MEDIUM
qualitative

Primary rating from Vendor (f86ef6dc-4d3a-42ad-8f28-e6d5547a5007).

CVSS VectorVendor: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

3
Patch available
Aug 13, 2026 - 14:02 EUVD
Analysis Generated
Aug 13, 2026 - 13:47 vuln.today
CVE Published
Aug 13, 2026 - 13:17 cve.org
MEDIUM 4.3

DescriptionCVE.org

Buffer over-read in PostgreSQL ascii() SQL function allows a user to disclose up to 3 bytes after the end of a specific allocation, via a crafted text value. This is the same class of defect that CVE-2026-2006 fixed, though this instance has less impact. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

AnalysisAI

Buffer over-read in PostgreSQL's ascii() SQL function exposes up to 3 bytes of heap memory beyond a specific allocation boundary when processing a crafted text value. Authenticated database users on affected versions - PostgreSQL 14.x before 14.24, 15.x before 15.19, 16.x before 16.15, 17.x before 17.11, and 18.x before 18.5 - can trigger this condition via a malicious SQL query. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain authenticated database credentials
Delivery
Connect to target PostgreSQL instance
Exploit
Submit crafted SQL invoking ascii() with malicious text
Execution
Trigger heap over-read
Persist
Collect up to 3 bytes of adjacent memory
Impact
Repeat to probe heap layout
Sign in to reveal

Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated database session - the CVSS vector PR:L confirms low-privilege authenticated access is sufficient; unauthenticated exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N, score 4.3) accurately reflects the limited blast radius: network-reachable, low complexity, but requiring authenticated access and producing only a partial confidentiality impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An authenticated database user submits a crafted SQL query such as SELECT ascii(malicious_text_value) designed to position the allocation boundary so that the over-read exposes adjacent heap bytes. The returned value or an error side-channel could leak up to 3 bytes of memory contents. …
Remediation Upgrade to the patched releases: PostgreSQL 18.5, 17.11, 16.15, 15.19, or 14.24, as detailed in the vendor advisory at https://www.postgresql.org/support/security/CVE-2026-18024/. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Threat intelligence, references, and detailed analysis are available after sign-in.

More in PostgreSQL

View all
CVE-2025-1094 HIGH POC
8.1 Feb 13

PostgreSQL libpq functions PQescapeLiteral(), PQescapeIdentifier(), PQescapeString(), and PQescapeStringConn() improperl
CVE-2024-55964 CRITICAL POC
9.8 Mar 26

An issue was discovered in Appsmith before 1.52. Rated critical severity (CVSS 9.8), this vulnerability is remotely expl
CVE-2013-1899 MEDIUM POC
6.5 Apr 04

Argument injection vulnerability in PostgreSQL 9.2.x before 9.2.4, 9.1.x before 9.1.9, and 9.0.x before 9.0.13 allows re
CVE-2026-20253 CRITICAL POC
9.8 Jun 10

Unauthenticated arbitrary file write in Splunk Enterprise (below 10.2.4 and 10.0.7) and Splunk Cloud Platform (below 10.
CVE-2017-7546 CRITICAL
9.8 Aug 16

PostgreSQL versions before 9.2.22, 9.3.18, 9.4.13, 9.5.8 and 9.6.4 are vulnerable to incorrect authentication flaw allow
CVE-2015-1352 MEDIUM POC
5.0 Mar 30

The build_tablename function in pgsql.c in the PostgreSQL (aka pgsql) extension in PHP through 5.6.7 does not validate t
CVE-2024-10553 CRITICAL POC
9.8 Mar 20

A vulnerability in the h2oai/h2o-3 REST API versions 3.46.0.4 allows unauthenticated remote attackers to execute arbitra
CVE-2019-9193 HIGH POC
7.2 Apr 01

In PostgreSQL 9.3 through 11.2, the "COPY TO/FROM PROGRAM" function allows superusers and users in the 'pg_execute_serve
CVE-2026-40887 CRITICAL POC
9.1 Apr 14

Unauthenticated SQL injection in Vendure Shop API allows remote attackers to execute arbitrary SQL commands against the

CVE-2022-24760 CRITICAL POC
10.0 Mar 12

Parse Server is an open source http web server backend. Rated critical severity (CVSS 10.0), this vulnerability is remot
CVE-2025-56157 CRITICAL POC
9.8 Dec 18

Hard-coded default PostgreSQL credentials shipped in the docker-compose.yaml of langgenius Dify through version 1.5.1 al
CVE-2024-12909 CRITICAL POC
9.8 Mar 20

A vulnerability in the FinanceChatLlamaPack of the run-llama/llama_index repository, versions up to v0.12.3, allows for

Same weakness CWE-126 – Buffer Over-read

View all
CVE-2017-7668 HIGH
7.5
CVE-2017-7679 CRITICAL POC
9.8
CVE-2021-34584 CRITICAL POC
9.1
CVE-2022-1987 HIGH POC
8.1
CVE-2022-1908 HIGH POC
8.1
CVE-2022-1907 HIGH POC
8.1
CVE-2023-0817 HIGH POC
7.8
CVE-2022-3178 HIGH POC
7.8

Same technique Buffer Overflow

View all
CVE-2017-7269 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2020-0796 CRITICAL POC
10.0
CVE-2009-0927 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2017-11882 HIGH POC
7.8

Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected

Share

EUVD-2026-57851 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy