How severe is CVE-2015-8684?

CVE-2015-8684 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-2015-8684 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-8684?

CVE-2015-8684 affects Exponentcms Exponent Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-8684?

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

When was CVE-2015-8684 published?

CVE-2015-8684 was published on 2017-01-18 and last updated on 2026-06-17.

CVE-2015-8684

CVE-2015-8684 is a medium-severity vulnerability in Exponentcms Exponent Cms 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Exponentcms Exponent Cms
Published: 2017-01-18
Last modified: 2026-06-17

Description

Exponent CMS before 2.3.7 does not properly restrict the types of files that can be uploaded, which allows remote attackers to conduct cross-site scripting (XSS) attacks and possibly have other unspecified impact as demonstrated by uploading a file with an .html extension, then accessing it via the elFinder functionality.

Frequently asked questions

What is CVE-2015-8684?: Exponent CMS before 2.3.7 does not properly restrict the types of files that can be uploaded, which allows remote attackers to conduct cross-site scripting (XSS) attacks and possibly have other unspecified impact as demonstrated by uploading a file with an .html extension, then accessing it via the elFinder functionality.
How severe is CVE-2015-8684?: CVE-2015-8684 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-2015-8684 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-8684?: CVE-2015-8684 affects Exponentcms Exponent Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-8684?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-8684 published?: CVE-2015-8684 was published on 2017-01-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:exponentcms:exponent_cms:*:*:*:*:*:*:*:*

More vulnerabilities in Exponentcms Exponent Cms

CVE-2016-9026 — Critical (CVSS 9.8): Exponent CMS before 2.6.0 has improper input validation in fileController.php.
CVE-2016-9025 — Critical (CVSS 9.8): Exponent CMS before 2.6.0 has improper input validation in purchaseOrderController.php.
CVE-2016-9023 — Critical (CVSS 9.8): Exponent CMS before 2.6.0 has improper input validation in cron/find_help.php.
CVE-2016-9022 — Critical (CVSS 9.8): Exponent CMS before 2.6.0 has improper input validation in usersController.php.
CVE-2016-9021 — Critical (CVSS 9.8): Exponent CMS before 2.6.0 has improper input validation in storeController.php.
CVE-2016-8900 — Critical (CVSS 9.8): Exponent CMS version 2.3.9 suffers from a Object Injection vulnerability in…

All CVEs affecting Exponentcms Exponent Cms →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →