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CVE-2026-0562

Insecure Direct Object Reference (IDOR) in parisneo/lollms

8.3 HighFix available

A critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any authenticated user to accept or reject friend requests belonging to other users. The respond_request() function in backend/routers/friends.py does not implement proper authorization checks, enabling Insecure Direct Object Reference (IDOR) attacks. Specifically, the /api/friends/requests/{friendship_id} endpoint fails to verify whether the authenticated user is part of the friendship or the intended recipient of the request. This vulnerability can lead to unauthorized access, privacy violations, and potential social engineering attacks. The issue has been addressed in version 2.2.0.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
Low

Exploit likelihood

0.27%Up 0.2 points since Mar 30, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.3

Insecure Direct Object Reference (IDOR) in parisneo/lollms

A critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any authenticated user to accept or reject friend requests belonging to other users. The respond_request() function in backend/routers/friends.py does not implement proper authorization checks, enabling Insecure Direct Object Reference (IDOR) attacks. Specifically, the /api/friends/requests/{friendship_id} endpoint fails to verify whether the authenticated user is part of the friendship or the intended recipient of the request. This vulnerability can lead to unauthorized access, privacy violations, and potential social engineering attacks. The issue has been addressed in version 2.2.0.

Record
CVE-2026-0562
CVSS 3.0
8.3 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Weakness
CWE-863
Updated
2026-11-02
EUVDEUVD-2026-17039 8.3

A critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any authenticated user to accept or reject friend requests belonging to other users. The respond_request() function in backend/routers/friends.py does not implement proper authorization checks, enabling Insecure Direct Object Reference (IDOR) attacks. Specifically, the /api/friends/requests/{friendship_id} endpoint fails to verify whether the authenticated user is part of the friendship or the intended recipient of the request. This vulnerability can lead to unauthorized access, privacy violations, and potential social engineering attacks. The issue has been addressed in version 2.2.0.

Record
EUVD-2026-17039
CVSS 3.0
8.3 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Updated
2026-11-02
GitHub AdvisoriesGHSA-2j48-mfm5-x2hv 8.3

A critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any...

A critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any authenticated user to accept or reject friend requests belonging to other users. The respond_request() function in backend/routers/friends.py does not implement proper authorization checks, enabling Insecure Direct Object Reference (IDOR) attacks. Specifically, the /api/friends/requests/{friendship_id} endpoint fails to verify whether the authenticated user is part of the friendship or the intended recipient of the request. This vulnerability can lead to unauthorized access, privacy violations, and potential social engineering attacks. The issue has been addressed in version 2.2.0.

Record
GHSA-2j48-mfm5-x2hv
CVSS 3.0
8.3 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Weakness
CWE-863
Updated
2026-11-02
NVD 8.3

A critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any authenticated user to accept or reject friend requests belonging to other users. The respond_request() function in backend/routers/friends.py does not implement proper authorization checks, enabling Insecure Direct Object Reference (IDOR) attacks. Specifically, the /api/friends/requests/{friendship_id} endpoint fails to verify whether the authenticated user is part of the friendship or the intended recipient of the request. This vulnerability can lead to unauthorized access, privacy violations, and potential social engineering attacks. The issue has been addressed in version 2.2.0.

Record
CVE-2026-0562
CVSS 3.1
8.3 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CVSS 3.0
8.3 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Weakness
CWE-863
Updated
2026-11-02
OSV 8.3

Insecure Direct Object Reference (IDOR) in parisneo/lollms

A critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any authenticated user to accept or reject friend requests belonging to other users. The respond_request() function in backend/routers/friends.py does not implement proper authorization checks, enabling Insecure Direct Object Reference (IDOR) attacks. Specifically, the /api/friends/requests/{friendship_id} endpoint fails to verify whether the authenticated user is part of the friendship or the intended recipient of the request. This vulnerability can lead to unauthorized access, privacy violations, and potential social engineering attacks. The issue has been addressed in version 2.2.0.

Record
CVE-2026-0562
CVSS 3.0
8.3 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Weakness
CWE-863
Updated
2026-11-02
OSVPYSEC-2026-204 8.3

A critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any authenticated user to accept or reject friend requests belonging to other users. The respond_request() function in backend/routers/friends.py does not implement proper authorization checks, enabling Insecure Direct Object Reference (IDOR) attacks. Specifically, the /api/friends/requests/{friendship_id} endpoint fails to verify whether the authenticated user is part of the friendship or the intended recipient of the request. This vulnerability can lead to unauthorized access, privacy violations, and potential social engineering attacks. The issue has been addressed in version 2.2.0.

Record
PYSEC-2026-204
CVSS 3.1
8.3 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
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-2026-0562 is a high vulnerability (CVSS 8.3) in Lollms, published March 29, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th 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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