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CVE-2026-17543

SQL injection in ext-pgsql via E'...' backslash breakout

High8.1EPSS 0.33%
Published
Updated
Reserved
Assigned by
php

Description

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.

Scores

CVSS scores of CVE-2026-17543, by who scored it
Scored byCVSSScoreVector
phpCNA (assigner)4.0High8.1CVSS: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/AU:Y/R:U
NVDNVD · Analyzed4.0High8.1CVSS: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:X
EPSS (exploitation in 30 days)
0.33% · top 74% of all CVEs (5 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.

Weakness

Affected products

  • PHP Group · PHP

    • affected 8.2.* – < 8.2.33
    • affected 8.3.* – < 8.3.33
    • affected 8.4.* – < 8.4.24
    • affected 8.5.* – < 8.5.9

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .