CVE-2013-3300

What it is

The JsonParser class in json/JsonParser.scala in Lift before 2.5 interprets a certain end-index value as a length value, which allows remote authenticated users to obtain sensitive information from other users' sessions via invalid input data containing a < (less than) character.

At a glance

Exploitability

Can be exploited over the network with a login. Limited direct impact.

Exploit odds

1.5% chance of exploitation in the next 30 days (EPSS).

Fix

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

Timeline

1. 2013-07-29 13:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:54 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.5% in the next 30 days (EPSS).
• Severity: 4.0 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2013-07-29 13:59 UTC

Last modified

2026-06-16 23:54 UTC

Exploit probability

1.5% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• Liftweb Lift ≤ 2.5
• Liftweb Lift 2.1
• Liftweb Lift 2.2
• Liftweb Lift 2.3
• Liftweb Lift 2.4
• Liftweb Lift 2.5

Attack profile CVSS 2.0 · 4.0

Attack vector

Network

Complexity

Low

Authentication

Single

Confidentiality

Partial

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-2013-3300.md and follow it. Check whether this project is affected by CVE-2013-3300. 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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