SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2007-1583

The mb_parse_str function in PHP 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1 sets the internal register_globals flag and does not disable it in certain cases when a script terminates, which allows remote attackers to invoke available PHP scripts with…

EXPLOIT ✓MEDIUM 6.8EPSS 5.44%

Does this matter?

A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 5.4%. Treat it as high on anything reachable from the internet.

Description

The mb_parse_str function in PHP 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1 sets the internal register_globals flag and does not disable it in certain cases when a script terminates, which allows remote attackers to invoke available PHP scripts with register_globals functionality that is not detectable by these scripts, as demonstrated by forcing a memory_limit violation.

CVSS 2.0
6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
EPSS
5.44% probability · 93th percentile
Public exploits
1 in Exploit-DB · verified · first 19 March 2007
CISA KEV
Not listed
Affected
php/php
Source
cve@mitre.org
EPSS trend
0%5%10%26 October 2026: 5.44%26 October 202626 October 2026

EPSS 5.4% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-29752source ↗PHP 5.1.6 - Mb_Parse_Str Function Register_Globals Activationphp · Stefan Esserremote19 March 2007yes

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.