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Not in CISA KEV
MEDIUM severity

CVE-2010-2480 — mako

MEDIUM

CVE-2010-2480 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in mako. A fix is available for mako — see the affected versions and patch details below.

Mako contains Cross-site Scripting vulnerability

Also known asGHSA-7q8x-38mc-p84fPYSEC-2010-1
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 1, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs79th percentile — riskier than 79% of all scored CVEsHighest risk
0.00%0.77%1.55%2.32%0.4%1.8%May 26Aug 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
🐍mako

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

Mako before 0.3.4 relies on the cgi.escape function in the Python standard library for cross-site scripting (XSS) protection, which makes it easier for remote attackers to conduct XSS attacks via vectors involving single-quote characters and a JavaScript onLoad event handler for a BODY element.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPImakoall versions0.3.4pip install --upgrade 'mako==0.3.4'

Affected Products

1 product · 22 configurations
Application
makomakotemplates
≤ 0.3.3
21 versions
0.1.00.1.10.1.20.1.30.1.40.1.50.1.60.1.70.1.80.1.90.1.100.2.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update mako to 0.3.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2010-2480 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

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.

Ubuntu
USN-996-1Ubuntu

Frequently Asked Questions

Mako before 0.3.4 relies on the cgi.escape function in the Python standard library for cross-site scripting (XSS) protection, which makes it easier for remote attackers to conduct XSS attacks via vectors involving single-quote characters and a JavaScript onLoad event handler for a BODY element.
O3 Security · Impact-Aware SCA

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CVE-2010-2480: mako XSS — Fixed in 0.3.4