CVE-2020-7066

What it is

In PHP versions 7.2.x below 7.2.29, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using get_headers() with user-supplied URL, if the URL contains zero (\0) character, the URL will be silently truncated at it. This may cause some software to make incorrect assumptions about the target of the get_headers() and possibly send some information to a wrong server.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

2.7% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2020-04-01 04:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:24 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 2.7% in the next 30 days (EPSS).
• Severity: 5.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2020-04-01 04:15 UTC

Last modified

2026-06-17 03:24 UTC

Exploit probability

2.7% · EPSS, next 30 days

Weakness

CWE-170

Record status

Modified

Affected

• PHP < 7.2.29
• PHP < 7.3.16
• PHP < 7.4.4
• Tenable tenable.sc < 5.19.0
• Tenable tenable.sc 5.19.0
• Opensuse Leap 15.1
• Debian Linux 8.0
• Debian Linux 9.0

Attack profile CVSS 3.1 · 5.3

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2020-7066.md and follow it. Check whether this project is affected by CVE-2020-7066. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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