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CVE-2026-1116

Cross-site Scripting (XSS) in parisneo/lollms

8.2 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
Low
Availability
None

Exploit likelihood

0.26%Up 0.2 points since Apr 12, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.2

Cross-site Scripting (XSS) in parisneo/lollms

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.

Record
CVE-2026-1116
CVSS 3.0
8.2 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2026-21692 8.2

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.

Record
EUVD-2026-21692
CVSS 3.0
8.2 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-w676-j9x4-3hq2 8.2

A Cross-site Scripting (XSS) vulnerability was identified in the `from_dict` method of the ...

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.

Record
GHSA-w676-j9x4-3hq2
CVSS 3.0
8.2 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
NVD 6.1

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.

Record
CVE-2026-1116
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 3.0
8.2 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 8.2

Cross-site Scripting (XSS) in parisneo/lollms

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.

Record
CVE-2026-1116
CVSS 3.0
8.2 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVPYSEC-2026-2200 6.1

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.

Record
PYSEC-2026-2200
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
lollms
PyPI
before 2.1.1, plus listed versions
1.1.101.1.111.1.121.1.131.1.14
Show 45 moreShow less
1.1.151.1.161.1.171.1.181.1.191.1.201.1.211.1.221.1.251.1.261.1.271.1.281.1.291.1.31.1.301.1.311.1.321.1.331.1.341.1.351.1.361.1.371.1.381.1.451.1.461.1.471.1.481.1.491.1.51.1.501.1.511.1.521.1.531.1.551.1.561.1.571.1.581.1.591.1.61.1.601.1.611.1.621.1.631.1.641.1.65
2.1.1

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-1116 is a high vulnerability (CVSS 8.2) in Lollms, published April 12, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. Fixed in lollms 2.1.1.

References

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Left out here: 68 versions. The JSON record has them.

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