CVE-2025-30210: Bruno is an open source IDE for exploring and testing APIs

Q: How do I fix CVE-2025-30210?

bruno: upgrade to 1.39.1. Exact commands for each OS are on this page.

Q: Is CVE-2025-30210 being exploited?

CVE-2025-30210 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-2025-30210 affect?

CVE-2025-30210 affects bruno. Severity is medium (CVSS 6.1). Bruno is an open source IDE for exploring and testing APIs. Prior to 1.39.1, the custom tool-tip components which internally use react-tooltip were setting the content (in this case the Environment name) as raw HTML which then gets injected

Q: How urgent is CVE-2025-30210?

Priority 34/100. Public exploit reference

Routine

MEDIUM 6.1UPGRADE

CVE-2025-30210 is a medium-severity flaw (CVSS 6.1) affecting bruno. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Bruno is an open source IDE for exploring and testing APIs. Prior to 1.39.1, the custom tool-tip components which internally use react-tooltip were setting the content (in this case the Environment name) as raw HTML which then gets injected into DOM on hover. This, combined with loose Content Security Policy restrictions, allowed any valid HTML text containing inline script to get executed on hovering over the respective Environment's name. This

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-80
Published	2025-04-01
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2025-04-01 15:16 UTCPublished CVE record published
2026-06-17 09:08 UTCUpdated Record last modified

usebruno bruno UPGRADE

Affected: < 1.39.1

Fixed in: 1.39.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.39.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bruno

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-2025-30210?

bruno: upgrade to 1.39.1. Exact commands for each OS are on this page.

Is CVE-2025-30210 being exploited?

CVE-2025-30210 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-2025-30210 affect?

CVE-2025-30210 affects bruno. Severity is medium (CVSS 6.1). Bruno is an open source IDE for exploring and testing APIs. Prior to 1.39.1, the custom tool-tip components which internally use react-tooltip were setting the content (in this case the Environment name) as raw HTML which then gets injected

How urgent is CVE-2025-30210?

Priority 34/100. Public exploit reference

Software pages

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References

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