CVE-2025-1451: A vulnerability in parisneo/lollms-webui v13 arises from the server's handling of multipart boundaries in file

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2025-1451 is a high-severity flaw (CVSS 7.5) affecting lollms web ui. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in parisneo/lollms-webui v13 arises from the server's handling of multipart boundaries in file uploads. The server does not limit or validate the length of the boundary or the characters appended to it, allowing an attacker to craft requests with excessively long boundaries, leading to resource exhaustion and eventual denial of service (DoS). Despite an attempted patch in commit 483431bb, which blocked hyphen characters from being

Why this priority

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

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-770
Published	2025-03-20
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

2025-03-20 10:15 UTCPublished CVE record published
2026-06-17 08:39 UTCUpdated Record last modified

lollms lollms web ui DOWNGRADE

Affected: 13

Fixed in: no fixed release known

Safe to downgrade to: a release before 13

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 13 (Debian / Ubuntu)

apt-cache madison lollms-web-ui sudo apt install lollms-web-ui=<VERSION_BEFORE_13> sudo apt-mark hold lollms-web-ui

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list lollms-web-ui sudo dnf downgrade lollms-web-ui-<VERSION_BEFORE_13> sudo dnf versionlock add lollms-web-ui

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-1451?

lollms web ui: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-1451 being exploited?

CVE-2025-1451 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-2025-1451 affect?

CVE-2025-1451 affects lollms web ui. Severity is high (CVSS 7.5). A vulnerability in parisneo/lollms-webui v13 arises from the server's handling of multipart boundaries in file uploads. The server does not limit or validate the length of the boundary or the characters appended to it, allowing an attacker

How urgent is CVE-2025-1451?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-33340 CRITICAL 9.1 MITIGATE LoLLMs WEBUI provides the Web user interface for Lord of Large Language and Multi modal Systems
CVE-2024-9920 HIGH 8.8 DOWNGRADE In version v12 of parisneo/lollms-webui, the 'Send file to AL' function allows uploading files with various ex
CVE-2024-9919 HIGH 8.4 DOWNGRADE A missing authentication check in the uninstall endpoint of parisneo/lollms-webui V13 allows attackers to perf
CVE-2024-8898 CRITICAL 9.8 DOWNGRADE A path traversal vulnerability exists in the `install` and `uninstall` API endpoints of parisneo/lollms-webui
CVE-2024-8736 MEDIUM 6.5 DOWNGRADE A Denial of Service (DoS) vulnerability exists in multiple file upload endpoints of parisneo/lollms-webui vers

References

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