CVE-2025-9800: A weakness has been identified in SimStudioAI sim up to ed9b9ad83f1a7c61f4392787fb51837d34eeb0af

Q: How do I fix CVE-2025-9800?

sim: upgrade to newer than 0.3.40. Exact commands for each OS are on this page.

Q: Is CVE-2025-9800 being exploited?

CVE-2025-9800 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-2025-9800 affect?

CVE-2025-9800 affects sim. Severity is medium (CVSS 6.3). A weakness has been identified in SimStudioAI sim up to ed9b9ad83f1a7c61f4392787fb51837d34eeb0af. Affected by this issue is the function Import of the file apps/sim/app/api/files/upload/route.ts of the component HTML File Parser. Executing

Q: How urgent is CVE-2025-9800?

Priority 33/100. Public exploit reference

Routine

MEDIUM 6.3UPGRADE

CVE-2025-9800 is a medium-severity flaw (CVSS 6.3) affecting sim. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A weakness has been identified in SimStudioAI sim up to ed9b9ad83f1a7c61f4392787fb51837d34eeb0af. Affected by this issue is the function Import of the file apps/sim/app/api/files/upload/route.ts of the component HTML File Parser. Executing manipulation of the argument File can lead to unrestricted upload. The attack may be launched remotely. The exploit has been made available to the public and could be exploited. This product operates on a rolli

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-284, CWE-434
Published	2025-09-01
Last modified	2026-10-01

Publisher (CNA): VulDB · Vendor: sim

Last updated 2026-10-01 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-09-01 23:15 UTCPublished CVE record published
2026-10-01 16:10 UTCUpdated Record last modified

sim sim UPGRADE

Affected: <= 0.3.40

Fixed in: newer than 0.3.40

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.3.40 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sim

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-2025-9800?

sim: upgrade to newer than 0.3.40. Exact commands for each OS are on this page.

Is CVE-2025-9800 being exploited?

CVE-2025-9800 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-2025-9800 affect?

CVE-2025-9800 affects sim. Severity is medium (CVSS 6.3). A weakness has been identified in SimStudioAI sim up to ed9b9ad83f1a7c61f4392787fb51837d34eeb0af. Affected by this issue is the function Import of the file apps/sim/app/api/files/upload/route.ts of the component HTML File Parser. Executing

How urgent is CVE-2025-9800?

Priority 33/100. Public exploit reference

Related CVEs

CVE-2025-15099 HIGH 7.3 UPGRADE A vulnerability was identified in simstudioai sim up to 0.5.27
CVE-2025-10097 MEDIUM 6.3 DOWNGRADE A vulnerability was identified in SimStudioAI sim up to 1.0.0
CVE-2026-3432 CRITICAL 9.1 UPGRADE On SimStudio version below to 0.5.74, the `/api/auth/oauth/token` endpoint contains a code path that bypasses
CVE-2026-3431 CRITICAL 9.8 UPGRADE On SimStudio version below to 0.5.74, the MongoDB tool endpoints accept arbitrary connection parameters from t
CVE-2025-9801 MEDIUM 5.4 UPGRADE A security vulnerability has been detected in SimStudioAI sim up to ed9b9ad83f1a7c61f4392787fb51837d34eeb0af

References

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