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Case File

CVE-2010-1866

CRITICAL · CVSS 9.8 EPSS 6.72%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2010-05-07 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It may lead to a denial-of-service condition.

CVE
CVE-2010-1866
Severity
CRITICAL
CVSS
9.8
EPSS
6.72%

Original NVD Description

The dechunk filter in PHP 5.3 through 5.3.2, when decoding an HTTP chunked encoding stream, allows context-dependent attackers to cause a denial of service (crash) and possibly trigger memory corruption via a negative chunk size, which bypasses a signed comparison, related to an integer overflow in the chunk size decoder.