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CVE-2013-3300 lift-webkit

Fix: lift/framework@099d9c8

CVE-2013-3300 is a Buffer Overflow vulnerability in net.liftweb:lift-webkit. 2 public exploit references exist, so weaponization risk is real. A fix is available for net.liftweb:lift-webkit — see the affected versions and patch details below.

Lift Sensitive Information Disclosure

Published
May 17, 2022
Updated
Sep 30, 2025
Affected
8 pkgs
Patched
1 / 8
Exploits
2 known
Exploitation data as of Sep 21, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs72th percentile — riskier than 72% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

8 pkgs affected
net.liftweb:lift-webkitnet.liftweb:lift-webkit_2.7.7net.liftweb:lift-webkit_2.8.0net.liftweb:lift-webkit_2.8.1net.liftweb:lift-webkit_2.8.2net.liftweb:lift-webkit_2.9.0net.liftweb:lift-webkit_2.9.0-1net.liftweb:lift-webkit_2.9.1

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

8 total 1 fixed
EcosystemPackageVulnerable rangeFix
Mavennet.liftweb:lift-webkitall versionsNo fix
Mavennet.liftweb:lift-webkit_2.7.7all versionsNo fix
Mavennet.liftweb:lift-webkit_2.8.0all versionsNo fix
Mavennet.liftweb:lift-webkit_2.8.1all versionsNo fix
Mavennet.liftweb:lift-webkit_2.8.2all versionsNo fix
Mavennet.liftweb:lift-webkit_2.9.0all versionsNo fix
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for net.liftweb:lift-webkit, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    No patched version of net.liftweb:lift-webkit has shipped for CVE-2013-3300 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2013-3300 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2013-3300. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

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.
O3 Security · Impact-Aware SCA

Is CVE-2013-3300 in your dependencies?

O3 Security finds CVE-2013-3300 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

CVE-2013-3300: lift-webkit Info Disclosure | O3 Security