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CVE-2024-53804· NVD / CVE Program· CNA Patchstack

WordPress WP Mailster plugin <= 1.8.16.0 - Sensitive Data Exposure vulnerability

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.58% (FIRST EPSS).
  • 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.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: brandtoss WP Mailster 1.8.17.0.

Low priority for now. Upgrade to brandtoss WP Mailster 1.8.17.0 or later.

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

Insertion of Sensitive Information Into Sent Data vulnerability in brandtoss WP Mailster wp-mailster allows Retrieve Embedded Sensitive Data.This issue affects WP Mailster: from n/a through <= 1.8.16.0.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Dec 6, 2024
Updated
Jun 17, 2026
EPSS
0.5% · 47th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.5
CNA · Patchstack
7.5
agree

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

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  • 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
wpmailsterwp mailster

Affected versions

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

  • wpmailster wp mailsterbefore 1.8.17

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Patchstack). Independent of NVD's CPE analysis and usually ahead of it.

  • brandtoss WP Mailster

    • up to and including 1.8.16.0affectedfixed in 1.8.17.0

Same product

wpmailster: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-53807WordPress WP Mailster plugin <= 1.8.16.0 - SQL Injection vulnerability
    39Monitor
  • CVE-2024-53805WordPress WP Mailster plugin <= 1.8.16.0 - Broken Access Control vulnerability
    39Monitor
  • CVE-2024-54355WordPress WP Mailster plugin <= 1.8.17.0 - Cross Site Request Forgery (CSRF) vulnerability
    35Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2024-11782Dec 3, 2024 · WP Mailster <= 1.8.17.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
    21Monitor
  • ← EarlierCVE-2024-53803Dec 6, 2024 · WordPress WP Mailster plugin <= 1.8.16.0 - Broken Access Control vulnerability
    35Monitor
  • Later →CVE-2025-22303Jan 7, 2025 · WordPress WP Mailster plugin <= 1.8.17.0 - Sensitive Data Exposure vulnerability
    30Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
brandtoss WP Mailster1.8.17.0Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No dated events beyond publication.

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.

  • MikaPatchstack Bug Bounty Programfinder

Variant candidates

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

  • CVE-2025-2230332 days apartWordPress WP Mailster plugin <= 1.8.17.0 - Sensitive Data Exposure vulnerability
    30Monitor

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
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-201 · Insertion of Sensitive Information Into Sent Data

CVSS vector

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

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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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References

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

All records