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NVD / CVE Program· CNA Wordfence

CVE-2025-3527: EventON - WordPress Virtual Event Calendar Plugin <= 4.9.6 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting

Noroxi assessment

Priority: Monitor (action score 21/100)

  • 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: 0.21% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: EventON EventON (Pro) - WordPress Virtual Event Calendar Plugin 4.9.6.

Low priority for now. Upgrade to EventON EventON (Pro) - WordPress Virtual Event Calendar Plugin 4.9.6 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

The EventON Pro plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check in the 'assets/lib/settings/settings.js' file in all versions up to, and including, 4.9.6. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vulnerability was partially patched in version 4.9.6.

MediumCVSS 5.4 · v3.1—No exploit Fix available
Published
May 17, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 11th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.4
CNA · Wordfence
6.4
1.0 point gap

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

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

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Is EventON on your site?

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
myeventoneventon

Affected versions

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

  • myeventon eventonup to 4.9.6 inclusive

Versions reported by the vendor

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

  • EventON EventON (Pro) - WordPress Virtual Event Calendar Plugin

    • up to and including 4.9.6affected · semver

Same product

myeventon: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-2796EventON < 2.1.2 - Unauthenticated Event Access
    34Monitor
  • CVE-2024-0235EventON (Free < 2.2.8, Premium < 4.5.5) - Unauthenticated Email Address Disclosure
    32Monitor
  • CVE-2020-29395The EventON plugin through 3.0.5 for WordPress allows addons/?q= XSS via the search field.
    28Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2023-7200Jan 29, 2024 · EventON < 4.4.1 - Reflected Cross-Site Scripting
    24Monitor
  • ← EarlierCVE-2024-4752Jul 13, 2024 · EventON < 2.2.15 - Admin+ Stored Cross-Site Scripting via event subtitle
    23Monitor
  • ← EarlierCVE-2024-6910Sep 9, 2024 · EventON < 2.2.17 - Admin+ Stored XSS
    19Monitor

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
EventON EventON (Pro) - WordPress Virtual Event Calendar Plugin4.9.6 · descriptionVendor (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.

No history yet (it accumulates with the daily EPSS job).

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.

Variant candidates

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

  • CVE-2024-0235487 days apartEventON (Free < 2.2.8, Premium < 4.5.5) - Unauthenticated Email Address Disclosure
    32Monitor
  • CVE-2023-6158493 days apartEventON - WordPress Virtual Event Calendar Plugin Pro <= 4.5.4 & Free <= 2.2.7 - Missing Authorization to Arbitrary Post Meta Update via evo_eventpost_update_me
    26Monitor
  • CVE-2024-0236487 days apartEventON (Free < 2.2.8, Premium < 4.5.5) - Unauthenticated Virtual Event Password Disclosure
    21Monitor
  • CVE-2024-0237487 days apartEventON (Free < 2.2.9, Premium <= 4.5.8) - Unauthenticated Virtual Event Settings Update
    21Monitor

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.
  • A low-privileged account is enough.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-862 · Missing Authorization

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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.

Change log

  1. Fix✗ → ✓

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References

Show all references (1 more)

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

All records