CVE-2010-4657 Information disclosure in php5

What is CVE-2010-4657?

CVE-2010-4657 is a high-severity vulnerability in Debian Debian Linux, published on 13 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-772

Which versions are affected by CVE-2010-4657?

It affects 3 products.

Products include Debian Debian Linux, Php Php, Redhat Enterprise Linux.

How do I fix CVE-2010-4657?

No fix has been published for CVE-2010-4657 yet. Limit exposure of the affected software until one is available.

Is CVE-2010-4657 being exploited?

There is no known exploitation of CVE-2010-4657 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-mx27-jhrp-2gfm.