How severe is CVE-2024-27290?

CVE-2024-27290 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2024-27290?

CVE-2024-27290 affects the following packages: docassemble-webapp (PyPI). Ecosystems affected: PyPI.

How do I fix CVE-2024-27290?

Update docassemble-webapp to 1.4.97 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-27290 is resolved across your whole dependency graph.

How do I detect CVE-2024-27290 in my PyPI dependencies?

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

How do I mitigate CVE-2024-27290 if there is no patch (or I can't update yet)?

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.

Is CVE-2024-27290 actively exploited in the wild?

No public exploit code has been indexed for CVE-2024-27290 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2024-27290?

CVE-2024-27290 has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 38th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2024-27290?

CVE-2024-27290 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2024-27290 published, and has it been updated?

CVE-2024-27290 was published on February 29, 2024 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐍

🐍 PyPI

Not in CISA KEV

MEDIUM severity

CVE-2024-27290 — docassemble-webapp

MEDIUMFix: jhpyle/docassemble@4801ac7

CVE-2024-27290 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in docassemble-webapp. A fix is available for docassemble-webapp — see the affected versions and patch details below.

Docassemble HTML and javascript injection

Also known asGHSA-pcfx-g2j2-f6f6PYSEC-2026-1311

Published

Feb 29, 2024

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 31, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2024-27290.

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs38th percentile — riskier than 38% of all scored CVEsHighest risk

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

🐍docassemble-webapp

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

Impact

A user could type HTML into a field, including the field for the user's name, and then that HTML could be displayed on the screen as HTML. The HTML can also contain <script> tags allowing JavaScript to execute on the page.

Patches

The vulnerability has been patched in version 1.4.97 of the master branch. The Docker image on docker.io has been patched.

Workarounds

If upgrading is not possible, manually apply the changes of 4801ac7 and restart the server (e.g., by pressing Save on the Configuration screen).

Credit

The vulnerability was discovered by Riyush Ghimire (@richighimi).

For more information

If you have any questions or comments about this advisory:

Open an issue in docassemble
Join the Slack channel
Email us at [email protected]

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`docassemble-webapp`	all versions	1.4.97`pip install --upgrade 'docassemble-webapp==1.4.97'`

Affected Products

1 product · 1 configurations

Application

docassemblejhpyle

< 1.4.97

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for docassemble-webapp, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update docassemble-webapp to 1.4.97 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-27290 is resolved across your whole dependency graph.
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.

Frequently Asked Questions

### Impact A user could type HTML into a field, including the field for the user's name, and then that HTML could be displayed on the screen as HTML. The HTML can also contain `<script>` tags allowing JavaScript to execute on the page. ### Patches The vulnerability has been patched in version 1.4.97 of the master branch. The Docker image on docker.io has been patched. ### Workarounds If upgrading is not possible, manually apply the changes of [4801ac7](https://github.com/jhpyle/docassemble/commit/4801ac7ff7c90df00ac09523077930cdb6dea2aa) and restart the server (e.g., by pressing Save on the