CVE-2026-25099: Bludit’s API plugin allows an authenticated attacker with a valid API token to upload files of any type and ex

Q: How do I fix CVE-2026-25099?

bludit: upgrade to 3.18.4. Exact commands for each OS are on this page.

Q: Is CVE-2026-25099 being exploited?

CVE-2026-25099 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-2026-25099 affect?

CVE-2026-25099 affects bludit. Severity is high (CVSS 8.8). Bludit’s API plugin allows an authenticated attacker with a valid API token to upload files of any type and extension without restriction, which can then be executed, leading to Remote Code Execution. This issue was fixed in 3.18.4.

Q: How urgent is CVE-2026-25099?

Priority 56/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2026-25099 is a high-severity flaw (CVSS 8.8) affecting bludit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Bludit’s API plugin allows an authenticated attacker with a valid API token to upload files of any type and extension without restriction, which can then be executed, leading to Remote Code Execution. This issue was fixed in 3.18.4.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-434
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: < 3.18.4

Fixed in: 3.18.4

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 3.18.4 (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.

Exact fixes by distribution

Fedora ELN · perl-Encode · FIXED · 3.25-528.eln159 · FEDORA-2026-79991d0238 · source

sudo dnf upgrade --advisory=FEDORA-2026-79991d0238

Fedora 46 · fonttools · FIXED · 4.68.0-1.fc46 · FEDORA-2026-65d6c01c75 · source

sudo dnf upgrade --advisory=FEDORA-2026-65d6c01c75

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: yahiahamza/CVE-2026-25099 (0 stars)
Exploit-DB: Bludit CMS 3.18.4 - RCE

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-2026-25099?

bludit: upgrade to 3.18.4. Exact commands for each OS are on this page.

Is CVE-2026-25099 being exploited?

CVE-2026-25099 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-2026-25099 affect?

CVE-2026-25099 affects bludit. Severity is high (CVSS 8.8). Bludit’s API plugin allows an authenticated attacker with a valid API token to upload files of any type and extension without restriction, which can then be executed, leading to Remote Code Execution. This issue was fixed in 3.18.4.

How urgent is CVE-2026-25099?

Priority 56/100. High severity; Public exploit reference

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-2026-25100 MEDIUM 5.4 UPGRADE Bludit is vulnerable to Stored Cross-Site Scripting (XSS) in its image upload functionality

References

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