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NVD / CVE Program· CNA mitre

CVE-2019-17240: bl-kernel/security.class.php in Bludit 3.9.2 allows attackers to bypass a brute-force protection mechanism by using many different forged X-

Noroxi assessment

Priority: Plan (action score 51/100)

  • Public proof-of-concept code exists (Exploit-DB, GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 39.5% (FIRST EPSS); higher than 98.6% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • No fixed version is recorded, but the references include a patch (commit or PR) link.
  • Severity is disputed: the assigning authority (CNA) scores it 3.7, NVD 9.8.

Add it to your regular patch cycle. See the fix and affected versions sections below.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

bl-kernel/security.class.php in Bludit 3.9.2 allows attackers to bypass a brute-force protection mechanism by using many different forged X-Forwarded-For or Client-IP HTTP headers.

CriticalCVSS 9.8 · v3.1—Proof of concept No fix recorded
Published
Oct 6, 2019
Updated
Jun 16, 2026
EPSS
39.5% · 98th percentile

Report tools

JSON

Action score

51

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
12 / 30 · 39.5%

CNA vs NVD score

NVD
9.8
CNA · mitre
3.7
6.1 point gap

CVSS:3.0/AC:H/AV:N/A:N/C:L/I:N/PR:N/S:U/UI:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2019-17240

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
bluditbludit

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • bludit bludit3.9.2

Same product

bludit: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-16113Bludit 3.9.2 allows remote code execution via bl-kernel/ajax/upload-images.php because PHP code can be entered with a .jpg file name, and th
    58Plan
  • CVE-2018-1000811bludit version 3.0.0 contains a Unrestricted Upload of File with Dangerous Type vulnerability in Content Upload in Pages Editor that can res
    49Plan
  • CVE-2020-18879Unrestricted File Upload in Bludit v3.8.1 allows remote attackers to execute arbitrary code by uploading malicious files via the component '
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2019-12742Jun 5, 2019 · Bludit prior to 3.9.1 allows a non-privileged user to change the password of any account, including admin.
    35Monitor
  • ← EarlierCVE-2019-16334Sep 15, 2019 · In Bludit v3.9.2, there is a persistent XSS vulnerability in the Categories -> Add New Category -> Name field.
    19Monitor
  • Later →CVE-2020-8811Feb 7, 2020 · ajax/profile-picture-upload.php in Bludit 3.10.0 allows authenticated users to change other users' profile pictures.
    17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×2
  • Proof-of-concept repository on GitHub ×9

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrywebapps2020-08-17
Exploit-DB entrywebapps2020-10-23
Proof-of-concept repository on GitHubstars:32020-06-08
Proof-of-concept repository on GitHubstars:02020-06-24
Proof-of-concept repository on GitHubstars:02020-07-28
Proof-of-concept repository on GitHubstars:22020-10-21
Proof-of-concept repository on GitHubstars:02021-03-22
Proof-of-concept repository on GitHubstars:02021-06-07
Proof-of-concept repository on GitHubstars:12021-06-15
Proof-of-concept repository on GitHubstars:02024-03-28
Proof-of-concept repository on GitHubstars:12025-01-11

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+245 d
  3. TodayOct 27, 2026+2578 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-307 · Improper Restriction of Excessive Authentication Attempts

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records