CVE-2026-17543
⛔ criticalSummary
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.
CVSS Score
9.8
Critical
EPSS Score
0.5
Exploit Probability
Published Date
2026-07-30
First Seen: 2026-07-31
📊 Relative Risk Intelligence
This CVE is Very High Risk - more severe than 90.5% of all 350,976 vulnerabilities in our database.
#33,444
Top 10% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: Jul 30, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
ExPatch-LLC
Alexandre Daubois - The PHP Foundation (analyst)
Ilija Tovilo - The PHP Foundation (remediation developer)
Matteo Beccati (remediation reviewer)
Jakub Zelenka - The PHP Foundation (remediation reviewer)
SSVC data provided by
CISA
Last Modified
2026-08-05
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Vector 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:X
CWE IDs (Weakness Types)