---
cve: "CVE-2010-1866"
severity: "LOW"
cvss: 3.1
epss: "6.7%"
vendor: "n/a"
kev: false
exploited: false
published: "2010-05-07 23:00:01"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T17:06:44+02:00"
---

# CVE-2010-1866

> 3.1 LOW

## Beschreibung

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.

## Exploit-Evidenz

- [EDB-33920 — PHP 5.3 - 'PHP_dechunk()' HTTP Chunked Encoding Integer Overflow](https://www.exploit-db.com/exploits/33920) ✅

## Referenzen

- <http://php-security.org/2010/05/02/mops-2010-003-php-dechunk-filter-signed-comparison-vulnerability/index.html>
- <http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2010-1866) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_