CVE-2018-25270: ThinkPHP 5.0.23 contains a remote code execution vulnerability that allows unauthenticated attackers to execut

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-25270 is a critical-severity flaw (CVSS 9.8) affecting thinkphp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ThinkPHP 5.0.23 contains a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary PHP code by invoking functions through the routing parameter. Attackers can craft requests to the index.php endpoint with malicious function parameters to execute system commands with application privileges.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
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	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-639
Published	2026-04-22
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: thinkphp

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

Am I affected?

Timeline

2026-04-22 16:16 UTCPublished CVE record published
2026-06-17 01:55 UTCUpdated Record last modified

thinkphp thinkphp UPGRADE

Affected: >= 5.0.0 and < 5.0.23 · 5.1.31

Fixed in: 5.0.23

Safe to downgrade to: a release before 5.0.0

1. Check installed version

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

2. UPGRADE to 5.0.23 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade thinkphp

Note

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

3. If no update is available yet, DOWNGRADE to a release before 5.0.0 (Debian / Ubuntu)

apt-cache madison thinkphp sudo apt install thinkphp=<VERSION_BEFORE_5.0.0> sudo apt-mark hold thinkphp

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list thinkphp sudo dnf downgrade thinkphp-<VERSION_BEFORE_5.0.0> sudo dnf versionlock add thinkphp

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

Fedora 46 · python-python-ulid · FIXED · 4.1.0-2.fc46 · FEDORA-2026-3652e4825b · source

sudo dnf upgrade --advisory=FEDORA-2026-3652e4825b

Fedora ELN · gmp · FIXED · 6.3.0-7.eln159 · FEDORA-2026-1139089b36 · source

sudo dnf upgrade --advisory=FEDORA-2026-1139089b36

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/top-think/framework/
Write-up: www.exploit-db.com/exploits/45978

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-2018-25270?

thinkphp: upgrade to 5.0.23. Exact commands for each OS are on this page.

Is CVE-2018-25270 being exploited?

CVE-2018-25270 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-2018-25270 affect?

CVE-2018-25270 affects thinkphp. Severity is critical (CVSS 9.8). ThinkPHP 5.0.23 contains a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary PHP code by invoking functions through the routing parameter. Attackers can craft requests to the index.php endpoint w

How urgent is CVE-2018-25270?

Priority 62/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

← Back to latest CVEs