NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
🐍
🐍 PyPI
Not in CISA KEV
HIGH severity

CVE-2013-4346 — oauth2

HIGH

CVE-2013-4346 is a high-severity (CVSS 7.5) CWE-310 vulnerability in oauth2. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

SimpleGeo python-oauth2 does not check the nonce allowing replay attacks

Also known asPYSEC-2014-85
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs84th percentile — riskier than 84% of all scored CVEsHighest risk
0.00%1.00%2.01%3.01%0.5%2.4%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐍oauth2

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

Description

The Server.verify_request function in SimpleGeo python-oauth2 does not check the nonce, which allows remote attackers to perform replay attacks via a signed URL. The vulnerability does not appear to be patched according to the following discussion.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐍PyPIoauth2all versionsNo fix

Affected Products

1 product · 1 configurations
Application
python-oauth2urbanairship
all

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for oauth2, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of oauth2 for CVE-2013-4346. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    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.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate
ProductFixed inAdvisory
Red Hat Satellite 6.1aopalliance-0:1.0-5.3.ep5.el6RHSA-2015:1592
Red Hat Satellite 6.1aether-0:1.13.1-13.el7RHSA-2015:1591

Frequently Asked Questions

The Server.verify_request function in SimpleGeo python-oauth2 does not check the nonce, which allows remote attackers to perform replay attacks via a signed URL. The vulnerability does not appear to be patched according to the following [discussion](https://github.com/joestump/python-oauth2/issues/129#issuecomment-895911502).
O3 Security · Impact-Aware SCA

Is CVE-2013-4346 in your dependencies?

Find it across PyPI, including transitive dependencies.

Scan my dependencies How O3 SCA works
CVE-2013-4346: oauth2 (High 7.5)