Is CVE-2013-3300 being actively exploited?

CVE-2013-3300 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-3300?

CVE-2013-3300 has a CVSS 2.0 base score of 4.0 (MEDIUM).

CVE-2013-3300

MEDIUM · CVSS 4.0EPSS 1.5%EU EUVD

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.

Key facts

CVSS score: 4.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:S/C:P/I:N/A:N
Weakness (CWE): CWE-119
EPSS score: 1.5% (74th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2022-4344)
Published: July 29, 2013
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2022-4344 in the EU Vulnerability Database. Last updated in EUVD on September 17, 2024.

View on the EU Vulnerability Database

Affected products

liftweb / lift
liftweb / lift
liftweb / lift
liftweb / lift
liftweb / lift
liftweb / lift
liftweb / lift
liftweb / lift
liftweb / lift
liftweb / lift
liftweb / lift

References

http://blog.addepar.com/2013/07/an-atypical-web-vulnerability.html(Exploit)
https://github.com/lift/framework/commit/099d9c86cf6d81f4953957add478ab699946e601(Exploit, Patch)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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