CVE-2026-35487: text-generation-webui is an open-source web interface for running Large Language Models

Q: How do I fix CVE-2026-35487?

text generation web ui: upgrade to 4.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-35487 being exploited?

CVE-2026-35487 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-2026-35487 affect?

CVE-2026-35487 affects text generation web ui. Severity is medium (CVSS 5.3). 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_prompt() allows reading any .txt file on the server filesystem. The file content

Q: How urgent is CVE-2026-35487?

Priority 28/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2026-35487 is a medium-severity flaw (CVSS 5.3) affecting text generation web ui. 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_prompt() allows reading any .txt file on the server filesystem. The file content is returned verbatim in the API response. This vulnerability is fixed in 4.3.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-04-07
Last modified	2026-10-25

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

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-07 16:16 UTCPublished CVE record published
2026-10-25 23:10 UTCUpdated Record last modified

oobabooga text generation web ui UPGRADE

Affected: < 4.3

Fixed in: 4.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy text-generation-web-ui || rpm -q text-generation-web-ui || text-generation-web-ui --version

2. UPGRADE to 4.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade text-generation-web-ui

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade text-generation-web-ui

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-2026-35487?

text generation web ui: upgrade to 4.3. Exact commands for each OS are on this page.

Is CVE-2026-35487 being exploited?

CVE-2026-35487 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-2026-35487 affect?

CVE-2026-35487 affects text generation web ui. Severity is medium (CVSS 5.3). 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_prompt() allows reading any .txt file on the server filesystem. The file content

How urgent is CVE-2026-35487?

Priority 28/100. Remotely exploitable, no login, no user action

References

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