CVE-2026-1116Public exploitNetwork attack vector

Stored XSS via unsanitized message content

Published Apr 12, 2026 · Updated Apr 12, 2026

Stored cross-site scripting in LoLLMS before 2.2.0 allows remote attackers to execute JavaScript in another user's browser via crafted message content. AppLollmsMessage.from_dict assigns the deserialized content field without HTML encoding or sanitization, allowing executable markup to reach browser-rendered messages. Exploitation requires another user to view the injected content and can expose that user's session or permit actions within the browser security context.

CVSS severity8.2
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in LoLLMS before 2.2.0 allows remote attackers to execute JavaScript in another user's browser via crafted message content. AppLollmsMessage.from_dict assigns the deserialized content field without HTML encoding or sanitization, allowing executable markup to reach browser-rendered messages. Exploitation requires another user to view the injected content and can expose that user's session or permit actions within the browser security context.

The record

CVE
CVE-2026-1116
Published
Apr 12, 2026
Updated
Apr 12, 2026
Vendor
ParisNeo
Product
LoLLMS
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <2.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ParisNeo · LoLLMSversion=unspecified <2.2.0

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
8.2huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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