GHSA-8wrq-fv5f-pfp2 is a critical-severity (CVSS 9.6) Cross-site Scripting (XSS) vulnerability in lollms. A fix is available for lollms — see the affected versions and patch details below.
parisneo/lollms vulnerable to stored XSS in the social feature
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA’s SSVC triage for GHSA-8wrq-fv5f-pfp2.
EPSS Exploitation Probability
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.
How urgent is this, really
GHSA-8wrq-fv5f-pfp2 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,238 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
lollmsReal-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
A Stored Cross-Site Scripting (XSS) vulnerability was identified in the social feature of parisneo/lollms, affecting the latest version prior to 2.2.0. The vulnerability exists in the create_post function within backend/routers/social/__init__.py, where user-provided content is directly assigned to the DBPost model without sanitization. This allows attackers to inject and store malicious JavaScript, which is executed in the browsers of users viewing the Home Feed, including administrators. This can lead to account takeover, session hijacking, and wormable attacks. The issue is resolved in version 2.2.0.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | lollms | all versions | 2.2.0pip install --upgrade 'lollms==2.2.0' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for lollms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update lollms to 2.2.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8wrq-fv5f-pfp2 is resolved across your whole dependency graph.
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.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-8wrq-fv5f-pfp2 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-8wrq-fv5f-pfp2. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
How to detect GHSA-8wrq-fv5f-pfp2
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id ghsa-8wrq-fv5f-pfp2 -u https://target- Template
- parisneo/lollms < 2.2.0 - Authenticated Stored XSS
- Severity
- high
- Impact
- Attackers can execute malicious scripts in user browsers, leading to account takeover, session hijacking, and wormable attacks.
- Remediation
- Update to version 2.2.0 or later.
Template by ProjectDiscovery nuclei-templates (str4k3r), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is GHSA-8wrq-fv5f-pfp2 in your dependencies?
O3 Security finds GHSA-8wrq-fv5f-pfp2 across PyPI dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.