CVE-2026-35485: text-generation-webui is an open-source web interface for running Large Language Models

Q: How do I fix CVE-2026-35485?

textgen: upgrade to 4.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-35485 being exploited?

CVE-2026-35485 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-2026-35485 affect?

CVE-2026-35485 affects textgen. Severity is high (CVSS 7.5). text-generation-webui is an open-source web interface for running Large Language Models. Prior to 4.3, an unauthenticated path traversal vulnerability in load_grammar() allows reading any file on the server filesystem with no extension rest

Q: How urgent is CVE-2026-35485?

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

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-35485 is a high-severity flaw (CVSS 7.5) affecting textgen. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

text-generation-webui is an open-source web interface for running Large Language Models. Prior to 4.3, an unauthenticated path traversal vulnerability in load_grammar() allows reading any file on the server filesystem with no extension restriction. Gradio does not server-side validate dropdown values, so an attacker can POST directory traversal payloads (e.g., ../../../etc/passwd) via the API and receive the full file contents in the response. Th

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-04-07
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: oobabooga

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-07 15:17 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

oobabooga textgen UPGRADE

Affected: < 4.3

Fixed in: 4.3

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 4.3 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade textgen

Note

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

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-2026-35485?

textgen: upgrade to 4.3. Exact commands for each OS are on this page.

Is CVE-2026-35485 being exploited?

CVE-2026-35485 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-2026-35485 affect?

CVE-2026-35485 affects textgen. Severity is high (CVSS 7.5). text-generation-webui is an open-source web interface for running Large Language Models. Prior to 4.3, an unauthenticated path traversal vulnerability in load_grammar() allows reading any file on the server filesystem with no extension rest

How urgent is CVE-2026-35485?

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

Related CVEs

CVE-2026-35484 MEDIUM 5.3 UPGRADE text-generation-webui is an open-source web interface for running Large Language Models
CVE-2026-35483 MEDIUM 5.3 UPGRADE text-generation-webui is an open-source web interface for running Large Language Models
CVE-2026-35050 CRITICAL 9.1 UPGRADE text-generation-webui is an open-source web interface for running Large Language Models

References

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