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NVD / CVE Program· CNA Wordfence

CVE-2023-6158: EventON - 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

Noroxi assessment

Priority: Monitor (action score 26/100)

  • 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: 0.56% (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.
  • No fixed version is recorded, but the references include a patch (commit or PR) link.

Low priority for now. 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

The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check on the evo_eventpost_update_meta function in all versions up to, and including, 4.5.4 (for Pro) and 2.2.7 (for free). This makes it possible for unauthenticated attackers to update and remove arbitrary post metadata. Note that certain parameters may allow for content injection. CVE-2024-0238 appears to be a duplicate of this issue.

MediumCVSS 6.5 · v3.1—No exploit No fix recorded
Published
Jan 10, 2024
Updated
Jun 17, 2026
EPSS
0.5% · 46th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 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
6.5
CNA · Wordfence
6.5
agree

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

Is EventON – Events Calendar on your site?

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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
myeventoneventon-lite

Affected versions

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

  • myeventon eventonup to 4.5.4 inclusive
  • myeventon eventon-liteup to 2.2.7 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.

  • ashanjay EventON – Events Calendar

    • up to and including 2.2.7affected · semver

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

    • up to and including 4.5.4affected · 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-2023-3219Jul 10, 2023 · EventON < 2.1.2 - Unauthenticated Post Access via IDOR
    23Monitor
  • ← EarlierCVE-2023-4388Oct 16, 2023 · EventON < 2.2 - Admin+ Stored XSS
    19Monitor
  • Later →CVE-2023-6242Jan 11, 2024 · EventON - WordPress Virtual Event Calendar Plugin Pro <= 4.5.4 & Free <= 2.2.7 - Cross-Site Request Forgery via evo_eventpost_update_meta
    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

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.

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-2023-2796184 days apartEventON < 2.1.2 - Unauthenticated Event Access
    34Monitor
  • CVE-2024-02356 days apartEventON (Free < 2.2.8, Premium < 4.5.5) - Unauthenticated Email Address Disclosure
    32Monitor
  • CVE-2024-02366 days apartEventON (Free < 2.2.8, Premium < 4.5.5) - Unauthenticated Virtual Event Password Disclosure
    21Monitor
  • CVE-2024-02376 days apartEventON (Free < 2.2.9, Premium <= 4.5.8) - Unauthenticated Virtual Event Settings Update
    21Monitor
  • CVE-2025-3527493 days apartEventON - WordPress Virtual Event Calendar Plugin <= 4.9.6 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting
    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.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

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

Weakness class (CWE)

CWE-862 · Missing Authorization

CVSS vector

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

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 (2 more)

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

All records