CVE-2025-6152: A vulnerability, which was classified as critical, was found in Steel Browser up to 0.1.3

Routine

MEDIUM 6.3DOWNGRADE

CVE-2025-6152 is a medium-severity flaw (CVSS 6.3) affecting browser. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability, which was classified as critical, was found in Steel Browser up to 0.1.3. This affects the function handleFileUpload of the file api/src/modules/files/files.routes.ts. The manipulation of the argument filename leads to path traversal. It is possible to initiate the attack remotely. The patch is named 7ba93a10000fb77ee01731478ef40551a27bd5b9. It is recommended to apply a patch to fix this issue.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-22
Published	2025-06-17
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: steel

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-06-17 02:15 UTCPublished CVE record published
2026-06-17 10:01 UTCUpdated Record last modified

steel browser DOWNGRADE

Affected: 0.1.1 beta1 · 0.1.2 beta · 0.1.3 beta

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.1.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.1.1 (Debian / Ubuntu)

apt-cache madison browser sudo apt install browser=<VERSION_BEFORE_0.1.1> sudo apt-mark hold browser

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

dnf --showduplicates list browser sudo dnf downgrade browser-<VERSION_BEFORE_0.1.1> sudo dnf versionlock add browser

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-2025-6152?

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

Is CVE-2025-6152 being exploited?

CVE-2025-6152 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-2025-6152 affect?

CVE-2025-6152 affects browser. Severity is medium (CVSS 6.3). A vulnerability, which was classified as critical, was found in Steel Browser up to 0.1.3. This affects the function handleFileUpload of the file api/src/modules/files/files.routes.ts. The manipulation of the argument filename leads to path

How urgent is CVE-2025-6152?

Priority 39/100. Public exploit reference

References

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