CVE-2023-46817: An issue was discovered in phpFox before 4.8.14

Q: How do I fix CVE-2023-46817?

phpfox: upgrade to 4.8.13. Exact commands for each OS are on this page.

Q: Is CVE-2023-46817 being exploited?

CVE-2023-46817 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-46817 affect?

CVE-2023-46817 affects phpfox. Severity is critical (CVSS 9.8). An issue was discovered in phpFox before 4.8.14. The url request parameter passed to the /core/redirect route is not properly sanitized before being used in a call to the unserialize() PHP function. This can be exploited by remote, unauthen

Q: How urgent is CVE-2023-46817?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-46817 is a critical-severity flaw (CVSS 9.8) affecting phpfox. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in phpFox before 4.8.14. The url request parameter passed to the /core/redirect route is not properly sanitized before being used in a call to the unserialize() PHP function. This can be exploited by remote, unauthenticated attackers to inject arbitrary PHP objects into the application scope, allowing them to perform a variety of attacks, such as executing arbitrary PHP code.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-502
Published	2023-11-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: phpfox

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-11-03 05:15 UTCPublished CVE record published
2026-06-17 06:31 UTCUpdated Record last modified

phpfox phpfox UPGRADE

Affected: < 4.8.13

Fixed in: 4.8.13

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy phpfox || rpm -q phpfox || phpfox --version

2. UPGRADE to 4.8.13 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade phpfox

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade phpfox

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-46817?

phpfox: upgrade to 4.8.13. Exact commands for each OS are on this page.

Is CVE-2023-46817 being exploited?

CVE-2023-46817 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-46817 affect?

CVE-2023-46817 affects phpfox. Severity is critical (CVSS 9.8). An issue was discovered in phpFox before 4.8.14. The url request parameter passed to the /core/redirect route is not properly sanitized before being used in a call to the unserialize() PHP function. This can be exploited by remote, unauthen

How urgent is CVE-2023-46817?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2022-34562 MEDIUM 6.1 DOWNGRADE A cross-site scripting (XSS) vulnerability in PHPFox v4.8.9 allows attackers to execute arbitrary web scripts
CVE-2022-34561 MEDIUM 4.3 DOWNGRADE A cross-site scripting (XSS) vulnerability in PHPFox v4.8.9 allows attackers to execute arbitrary web scripts
CVE-2022-34560 HIGH 7.1 DOWNGRADE A cross-site scripting (XSS) vulnerability in PHPFox v4.8.9 allows attackers to execute arbitrary web scripts

References

← Back to latest CVEs