CVE-2026-40086: Rembg is a tool to remove images background

Q: How do I fix CVE-2026-40086?

rembg: upgrade to 2.0.75. Exact commands for each OS are on this page.

Q: Is CVE-2026-40086 being exploited?

CVE-2026-40086 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-2026-40086 affect?

CVE-2026-40086 affects rembg. Severity is medium (CVSS 5.3). Rembg is a tool to remove images background. Prior to 2.0.75, a path traversal vulnerability in the rembg HTTP server allows unauthenticated remote attackers to read arbitrary files from the server's filesystem. By sending a crafted request

Q: How urgent is CVE-2026-40086?

Priority 41/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.3REMOTEUPGRADE

CVE-2026-40086 is a medium-severity flaw (CVSS 5.3) affecting rembg. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Rembg is a tool to remove images background. Prior to 2.0.75, a path traversal vulnerability in the rembg HTTP server allows unauthenticated remote attackers to read arbitrary files from the server's filesystem. By sending a crafted request with a malicious model_path parameter, an attacker can force the server to attempt loading any file as an ONNX model, revealing file existence, permissions, and potentially file contents through error messages

Why this priority

Public exploit reference
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	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-22, CWE-73
Published	2026-04-10
Last modified	2026-10-26

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

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

Am I affected?

Timeline

2026-04-10 17:17 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

danielgatis rembg UPGRADE

Affected: < 2.0.75

Fixed in: 2.0.75

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.0.75 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rembg

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-2026-40086?

rembg: upgrade to 2.0.75. Exact commands for each OS are on this page.

Is CVE-2026-40086 being exploited?

CVE-2026-40086 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-2026-40086 affect?

CVE-2026-40086 affects rembg. Severity is medium (CVSS 5.3). Rembg is a tool to remove images background. Prior to 2.0.75, a path traversal vulnerability in the rembg HTTP server allows unauthenticated remote attackers to read arbitrary files from the server's filesystem. By sending a crafted request

How urgent is CVE-2026-40086?

Priority 41/100. Public exploit reference; Remotely exploitable, no login, no user action

References

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