How severe is CVE-2026-48943?

CVE-2026-48943 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-48943 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-48943?

CVE-2026-48943 affects Joomlaworks K2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-48943?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-48943 have an EU (EUVD) identifier?

Yes. CVE-2026-48943 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39438.

When was CVE-2026-48943 published?

CVE-2026-48943 was published on 2026-06-25 and last updated on 2026-06-28.

CVE-2026-48943

CVE-2026-48943 is a medium-severity vulnerability in Joomlaworks K2 with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-915.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39438
Weakness: CWE-915
Affected product: Joomlaworks K2
Published: 2026-06-25
Last modified: 2026-06-28

Description

K2 ≤ 2.24 contains a mass-assignment defect in the K2 system user plugin `plg_user_k2`. A Registered Joomla user, by including the field `K2UserForm=1` in a standard `com_users` `profile.save` POST, can write arbitrary values into the `notes`, `image`, and `plugins` columns of their own row in the `#__k2_users` table — none of which are exposed by the K2 frontend profile-edit form.

Frequently asked questions

What is CVE-2026-48943?: K2 ≤ 2.24 contains a mass-assignment defect in the K2 system user plugin `plg_user_k2`. A Registered Joomla user, by including the field `K2UserForm=1` in a standard `com_users` `profile.save` POST, can write arbitrary values into the `notes`, `image`, and `plugins` columns of their own row in the `#__k2_users` table — none of which are exposed by the K2 frontend profile-edit form.
How severe is CVE-2026-48943?: CVE-2026-48943 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-48943 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-48943?: CVE-2026-48943 affects Joomlaworks K2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-48943?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-48943 have an EU (EUVD) identifier?: Yes. CVE-2026-48943 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39438.
When was CVE-2026-48943 published?: CVE-2026-48943 was published on 2026-06-25 and last updated on 2026-06-28.

References

https://www.getk2.org/

Affected products (1)

cpe:2.3:a:joomlaworks:k2:*:*:*:*:*:joomla\!:*:*

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