CVE-2026-0558: A vulnerability in parisneo/lollms, up to and including version 2.2.0, allows unauthenticated users to upload

Q: How do I fix CVE-2026-0558?

lollms: upgrade to newer than 2.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-0558 being exploited?

CVE-2026-0558 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-0558 affect?

CVE-2026-0558 affects lollms. Severity is critical (CVSS 9.8). A vulnerability in parisneo/lollms, up to and including version 2.2.0, allows unauthenticated users to upload and process files through the `/api/files/extract-text` endpoint. This endpoint does not enforce authentication, unlike other file

Q: How urgent is CVE-2026-0558?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-0558 is a critical-severity flaw (CVSS 9.8) affecting lollms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in parisneo/lollms, up to and including version 2.2.0, allows unauthenticated users to upload and process files through the `/api/files/extract-text` endpoint. This endpoint does not enforce authentication, unlike other file-related endpoints, and lacks the `Depends(get_current_active_user)` dependency. This issue can lead to denial of service (DoS) through resource exhaustion, information disclosure, and violation of the applicat

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-287
Published	2026-03-29
Last modified	2026-06-17

Publisher (CNA): huntr.dev · Vendor: lollms

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-29 18:16 UTCPublished CVE record published
2026-06-17 10:10 UTCUpdated Record last modified

lollms lollms UPGRADE

Affected: <= 2.1.0

Fixed in: newer than 2.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy lollms || rpm -q lollms || lollms --version

2. UPGRADE to newer than 2.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade lollms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lollms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora ELN · perl-Encode · FIXED · 3.25-528.eln159 · FEDORA-2026-79991d0238 · source

sudo dnf upgrade --advisory=FEDORA-2026-79991d0238

Fedora 46 · fonttools · FIXED · 4.68.0-1.fc46 · FEDORA-2026-65d6c01c75 · source

sudo dnf upgrade --advisory=FEDORA-2026-65d6c01c75

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: LolLMS <= 2.2.0 - Unauthenticated File Upload

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-0558?

lollms: upgrade to newer than 2.1.0. Exact commands for each OS are on this page.

Is CVE-2026-0558 being exploited?

CVE-2026-0558 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-0558 affect?

CVE-2026-0558 affects lollms. Severity is critical (CVSS 9.8). A vulnerability in parisneo/lollms, up to and including version 2.2.0, allows unauthenticated users to upload and process files through the `/api/files/extract-text` endpoint. This endpoint does not enforce authentication, unlike other file

How urgent is CVE-2026-0558?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-1114 CRITICAL 9.8 DOWNGRADE In parisneo/lollms version 2.1.0, the application's session management is vulnerable to improper access contro
CVE-2026-1115 CRITICAL 9.6 UPGRADE A Stored Cross-Site Scripting (XSS) vulnerability was identified in the social feature of parisneo/lollms, aff
CVE-2026-1116 MEDIUM 6.1 UPGRADE A Cross-site Scripting (XSS) vulnerability was identified in the `from_dict` method of the `AppLollmsMessage`
CVE-2026-12228 MEDIUM 5.4 UPGRADE A stored cross-site scripting (XSS) vulnerability exists in the `POST /api/prompts/share` endpoint of parisneo
CVE-2026-0562 HIGH 8.3 UPGRADE A critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any authenticated user to acc

References

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