How severe is CVE-2018-15493?

CVE-2018-15493 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-15493 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-15493?

CVE-2018-15493 affects Vbulletin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-15493?

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

When was CVE-2018-15493 published?

CVE-2018-15493 was published on 2018-10-17 and last updated on 2026-06-17.

CVE-2018-15493

CVE-2018-15493 is a medium-severity vulnerability in Vbulletin with a CVSS 3.x base score of 6.1. 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-601.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 5.8
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Vbulletin
Published: 2018-10-17
Last modified: 2026-06-17

Description

vBulletin 5.4.3 has an Open Redirect.

Frequently asked questions

What is CVE-2018-15493?: vBulletin 5.4.3 has an Open Redirect.
How severe is CVE-2018-15493?: CVE-2018-15493 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-15493 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-15493?: CVE-2018-15493 affects Vbulletin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-15493?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-15493 published?: CVE-2018-15493 was published on 2018-10-17 and last updated on 2026-06-17.

References

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2018-017.txt

Affected products (1)

cpe:2.3:a:vbulletin:vbulletin:5.4.3:*:*:*:*:*:*:*

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