CVE-2017-5677

PEAR HTML_AJAX 0.3.0 through 0.5.7 has a PHP Object Injection Vulnerability in the PHP Serializer...

9.8 Critical

PEAR HTML_AJAX 0.3.0 through 0.5.7 has a PHP Object Injection Vulnerability in the PHP Serializer. It allows remote code execution. In one viewpoint, the root cause is an incorrect regular expression.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

4.83%Up 1.7 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

Record: CVE-2017-5677
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2017-5677
Updated: 2026-11-02

EUVDEUVD-2017-14754 No score

Record: EUVD-2017-14754
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7p7h-4fmj-whxr 9.8

PEAR HTML_AJAX 0.3.0 through 0.5.7 has a PHP Object Injection Vulnerability in the PHP Serializer...

Record: GHSA-7p7h-4fmj-whxr
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

pear html ajax

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-5677 is a critical vulnerability (CVSS 9.8) in Pear Html Ajax, published February 6, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.83%, the 92nd percentile. No source names a fixed version.