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CVE-2026-6464— PostgreSQL psql COPY FROM STDIN early failure processes data lines as psql commands

Quick assessment

Affected
n/a PostgreSQL
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PostgreSQL是PostgreSQL组织开源的一套自由的对象关系型数据库管理系统。该系统支持大部分SQL标准并且提供了许多其他特性,例如外键、触发器、视图等。 PostgreSQL 18.5之前版本、17.11之前版本、16.15之前版本、15.19之前版本和14.24之前版本存在软件供应链问题漏洞，该漏洞源于psql COPY命令中不可信数据包含，通过错误注入，当“COPY FROM STDIN”或“\copy FROM STDIN”命令在服务器指示等待输入行之前失败时，psql会将内联数据行作为

CVSS 8.1 · High EPSS 0.36% · P29

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 5

VendorProduct Version RangeStatus
n/a PostgreSQL 18< 18.6 affected
17< 17.11 affected
16< 16.15 affected
15< 15.19 affected
< 14.24 affected
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I. Basic Information for CVE-2026-6464

Vulnerability Information
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Vulnerability Title
PostgreSQL psql COPY FROM STDIN early failure processes data lines as psql commands
Source: CVE Program / CVE List V5
Vulnerability Description
Untrusted data inclusion in PostgreSQL psql COPY may allow a server administrator to elicit execution of data lines as psql commands, via error injection. If the "COPY FROM STDIN" or "\copy FROM STDIN" command fails before the server indicates that it awaits input rows, psql processes the in-line data rows as psql commands. "COPY FROM" with a filename is unaffected. The server administrator has no inherent control over the data rows, so a complete attack requires the attacker to separately acquire control of both the server and the data rows. Alternatively, an attacker controlling data rows alone might complete an attack through a coincidental error that they don't control. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
从非可信控制范围包含功能例程
Source: CVE Program / CVE List V5
Vulnerability Title
PostgreSQL 软件供应链问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PostgreSQL是PostgreSQL组织开源的一套自由的对象关系型数据库管理系统。该系统支持大部分SQL标准并且提供了许多其他特性,例如外键、触发器、视图等。 PostgreSQL 18.5之前版本、17.11之前版本、16.15之前版本、15.19之前版本和14.24之前版本存在软件供应链问题漏洞，该漏洞源于psql COPY命令中不可信数据包含，通过错误注入，当“COPY FROM STDIN”或“\copy FROM STDIN”命令在服务器指示等待输入行之前失败时，psql会将内联数据行作为
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- PostgreSQL 18 ~ 18.6 -

II. Public POCs for CVE-2026-6464

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III. Intelligence Information for CVE-2026-6464

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Vendor Advisories for CVE-2026-6464 (1)

Same Patch Batch · n/a · 2026-08-13 · 31 CVEs total

CVE-2026-19385 8.8 HIGH PostgreSQL pg_dump heap buffer overflow executes arbitrary code
CVE-2026-16239 8.8 HIGH PostgreSQL type confusion in cursor CLOSE + DECLARE executes arbitrary code
CVE-2026-16238 8.8 HIGH PostgreSQL type confusion in pg_restore_attribute_stats() executes arbitrary code
CVE-2026-15742 8.8 HIGH PostgreSQL fuzzystrmatch writes effectively-arbitrary addresses, via integer wraparound
CVE-2026-15741 8.8 HIGH PostgreSQL expression deparse allows SQL injection via EXTRACT argument
CVE-2026-14680 8.8 HIGH PostgreSQL type confusion via "internal" arguments
CVE-2026-18408 8.8 HIGH PostgreSQL psql \unrestrict lets superuser of pg_dump origin server execute arbitrary code
CVE-2026-14677 8.8 HIGH PostgreSQL 32-bit pltcl and plperl undersize allocations, via integer wraparound
CVE-2026-14676 8.8 HIGH PostgreSQL pg_stat_statements heap buffer overflow executes arbitrary code
CVE-2026-14670 8.8 HIGH PostgreSQL plperl tied object heap buffer overflow executes arbitrary code
CVE-2026-14669 8.8 HIGH PostgreSQL to_char heap buffer overflow executes arbitrary code
CVE-2026-14664 8.8 HIGH PostgreSQL regexp heap buffer overflow executes arbitrary code
CVE-2026-14662 8.8 HIGH PostgreSQL tsvector and tsquery undersize allocations, via integer wraparound
CVE-2026-14671 8.8 HIGH PostgreSQL refint plan cache type confusion executes arbitrary code
CVE-2026-14679 8.2 HIGH PostgreSQL stack buffer overflow in argument match writes 0x0 and 0x1 to server memory
CVE-2026-14668 8.1 HIGH PostgreSQL ctid type confusion in selectivity estimator discloses derivative of arbitrary
CVE-2026-6471 7.2 HIGH PostgreSQL logical decoding can dlopen arbitrary file
CVE-2026-14663 6.5 MEDIUM PostgreSQL pgcrypto, for OpenSSL-disabled ciphers, silently encrypts to and decrypts from
CVE-2026-14672 5.3 MEDIUM PostgreSQL observable response discrepancy with non-default scram_iterations provides user
CVE-2026-14678 4.3 MEDIUM PostgreSQL pg_trgm picksplit reads past end of buffer

Showing top 20 of 31 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: PostgreSQL
Same vendor: n/a
Same weakness: CWE-829

V. Comments for CVE-2026-6464

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