CVE-2012-0036

What it is

curl and libcurl 7.2x before 7.24.0 do not properly consider special characters during extraction of a pathname from a URL, which allows remote attackers to conduct data-injection attacks via a crafted URL, as demonstrated by a CRLF injection attack on the (1) IMAP, (2) POP3, or (3) SMTP protocol.

At a glance

Exploitability

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

Exploit odds

16.1% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

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

Timeline

1. 2012-04-13 20:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:36 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 16.1% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2012-04-13 20:55 UTC

Last modified

2026-06-16 23:36 UTC

Exploit probability

16.1% · EPSS, next 30 days

Weakness

CWE-89 · SQL injection

Record status

Modified

Affected

• Curl 7.20.0
• Curl 7.20.1
• Curl 7.21.0
• Curl 7.21.1
• Curl 7.21.2
• Curl 7.21.3
• Curl 7.21.4
• Curl 7.21.5

Attack profile CVSS 2.0 · 7.5

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

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.

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