XSS in Lollms
CVE-2026-1116
A Cross-site Scripting (XSS) vulnerability was identified in the `from_dict` method of the `AppLollmsMessage` class in parisneo/lollms prior to version 2.2.0. The vulnerability arises from the lack of sanitization or HTML encoding of the `content` field when deserializing user-provided data. This allows an attacker to inject malicious HTML or JavaScript payloads, which can be executed in the context of another user's browser. Exploitation of this vulnerability can lead to account takeover, session hijacking, or wormable attacks.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (15.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Lollms
- Parisneo Parisneo/lollms — versions unspecified
Weakness classification (CWE)
References
- huntr.com/bounties/d3d076a7-2a51-4e07-8d0e-91e28e76788e (Exploit, Third Party Advisory)
- github.com/parisneo/lollms/commit/9767b882dbc893c388a286856beeaead69b8292a (Patch)
Frequently asked questions
- What is CVE-2026-1116?
- CVE-2026-1116 is a medium-severity vulnerability in Lollms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-04-12.
- How severe is CVE-2026-1116?
- Medium severity. CVSS v3 base score is 6.1 out of 10.