CVE-2026-17543
SQL injection in ext-pgsql via E'...' backslash breakout
- Published
- Jul 30, 2026
- Updated
- Jul 31, 2026
- Assigning CNA
- php
- Evidence observed
- Aug 6, 2026
Primary CVSS
nvd · CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:X/RE:X/U:XLow · next 30 days
- Percentile
- 25.5%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Improper escaping of backslashes in attacker-provided parameters would allow for trivial SQL injection in PHP versions from 8.2.* before 8.2.33, from 8.3.* before 8.3.33, from 8.4.* before 8.4.24, and from 8.5.* before 8.5.9.
Sources
1PoC exploit for CVE-2026-17543: SQL injection in PHP ext/pgsql via backslash breakout, with data exfiltration and admin privilege-escalation payloads for PostgreSQL.
Responsible use
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