CVE-2026-25100: Bludit is vulnerable to Stored Cross-Site Scripting (XSS) in its image upload functionality

Q: How do I fix CVE-2026-25100?

bludit: upgrade to 3.18.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-25100 being exploited?

CVE-2026-25100 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-2026-25100 affect?

CVE-2026-25100 affects bludit. Severity is medium (CVSS 5.4). Bludit is vulnerable to Stored Cross-Site Scripting (XSS) in its image upload functionality. An authenticated attacker with content upload privileges (such as Author, Editor, or Administrator) can upload an SVG file containing a malicious p

Q: How urgent is CVE-2026-25100?

Priority 21/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2026-25100 is a medium-severity flaw (CVSS 5.4) affecting bludit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Bludit is vulnerable to Stored Cross-Site Scripting (XSS) in its image upload functionality. An authenticated attacker with content upload privileges (such as Author, Editor, or Administrator) can upload an SVG file containing a malicious payload, which is executed when a victim visits the URL of the uploaded resource. The uploaded resource itself is accessible without authentication. The vendor was notified early about this vulnerability, but s

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-03-27
Last modified	2026-06-17

Publisher (CNA): CERT.PL · Vendor: bludit

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

Am I affected?

Timeline

2026-03-27 12:16 UTCPublished CVE record published
2026-06-17 10:24 UTCUpdated Record last modified

bludit bludit UPGRADE

Affected: < 3.18.2

Fixed in: 3.18.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 3.18.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bludit

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-2026-25100?

bludit: upgrade to 3.18.2. Exact commands for each OS are on this page.

Is CVE-2026-25100 being exploited?

CVE-2026-25100 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-2026-25100 affect?

CVE-2026-25100 affects bludit. Severity is medium (CVSS 5.4). Bludit is vulnerable to Stored Cross-Site Scripting (XSS) in its image upload functionality. An authenticated attacker with content upload privileges (such as Author, Editor, or Administrator) can upload an SVG file containing a malicious p

How urgent is CVE-2026-25100?

Priority 21/100. No elevated risk signals yet.

Related CVEs

CVE-2026-4420 MEDIUM 5.4 DOWNGRADE Bludit is vulnerable to Stored Cross-Site Scripting (XSS) in its page creating functionality
CVE-2026-25101 CRITICAL 9.8 UPGRADE Bludit allows user's session identifier to be set before authentication
CVE-2026-25099 HIGH 8.8 UPGRADE Bludit’s API plugin allows an authenticated attacker with a valid API token to upload files of any type and ex

References

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