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Vulnerability record · CVE-2010-4657 · published 13 November 2019

CVE-2010-4657: Php vulnerability

Php · Php

PHP5 before 5.4.4 allows passing invalid utf-8 strings via the xmlTextWriterWriteAttribute, which are then misparsed by libxml2. This results in memory leak into the resulting output.

7.5 CVSS 3.1 High EPSS 1.5% · top 26.1% CWE-772 · CWE-772
7.5CVSS 3.1 base score, v2 5.0
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

Description

PHP5 before 5.4.4 allows passing invalid utf-8 strings via the xmlTextWriterWriteAttribute, which are then misparsed by libxml2. This results in memory leak into the resulting output.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

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

References

LinkTags
https://access.redhat.com/security/cve/cve-2010-4657 Third Party Advisory
https://bugs.launchpad.net/php/%2Bbug/655442 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-4657 Issue TrackingThird Party Advisory
https://security-tracker.debian.org/tracker/CVE-2010-4657 Third Party Advisory
https://access.redhat.com/security/cve/cve-2010-4657 Third Party Advisory
https://bugs.launchpad.net/php/%2Bbug/655442 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-4657 Issue TrackingThird Party Advisory
https://security-tracker.debian.org/tracker/CVE-2010-4657 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2010-4657), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.