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Ubuntu Security NoticesUSN-8743-1

USN-8743-1: PHP vulnerabilities

It was discovered that PHP incorrectly handled backslash escaping in the PostgreSQL extension. An attacker could use this issue to perform SQL injection attacks. (CVE-2026-17543) It was discovered that PHP incorrectly handled certain inputs to the bccomp() function. An attacker could use this issue to cause an out-of- bounds write, resulting in a denial of service or possibly execute arbitrary code. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-17544) It was discovered that PHP incorrectly handled circular symbolic links in phar archives. An attacker could use this issue to cause unbounded recursion, resulting in a denial of service. (CVE-2026-7260)

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Scope

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  2. Added to SecurityAlert

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  3. Confirmed at the source

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Vulnerabilities

CVEs named in this advisory

CVE-2026-17543View CVSS, KEV, EPSS, and threat contextCVE-2026-17544View CVSS, KEV, EPSS, and threat contextCVE-2026-7260View CVSS, KEV, EPSS, and threat context
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