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Vulnerability record · CVE-2010-1128 · published 26 March 2010

CVE-2010-1128: Php vulnerability

Php · Php

The Linear Congruential Generator (LCG) in PHP before 5.2.13 does not provide the expected entropy, which makes it easier for context-dependent attackers to guess values that were intended to be unpredictable, as demonstrated by session cookies generated by using the uniqid function.

6.4 CVSS 2.0 Medium EPSS 7.9% · top 5.5% CWE-310 · CWE-310
6.4CVSS 2.0 base score
7.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

The Linear Congruential Generator (LCG) in PHP before 5.2.13 does not provide the expected entropy, which makes it easier for context-dependent attackers to guess values that were intended to be unpredictable, as demonstrated by session cookies generated by using the uniqid function.

AV:N/AC:L/Au:N/C:P/I:P/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://secunia.com/advisories/38708 Vendor Advisory
http://secunia.com/advisories/42410
http://www.php.net/ChangeLog-5.php
http://www.php.net/releases/5_2_13.php Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2010-0919.html
http://www.securityfocus.com/bid/38430 Exploit
http://www.vupen.com/english/advisories/2010/0479 PatchVendor Advisory
http://www.vupen.com/english/advisories/2010/3081
http://secunia.com/advisories/38708 Vendor Advisory
http://secunia.com/advisories/42410
http://www.php.net/ChangeLog-5.php
http://www.php.net/releases/5_2_13.php Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2010-0919.html
http://www.securityfocus.com/bid/38430 Exploit
http://www.vupen.com/english/advisories/2010/0479 PatchVendor Advisory
http://www.vupen.com/english/advisories/2010/3081

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2010-1128), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.