How severe is CVE-2017-17911?

CVE-2017-17911 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-2017-17911 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-17911?

CVE-2017-17911 affects Archon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-17911?

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

When was CVE-2017-17911 published?

CVE-2017-17911 was published on 2017-12-27 and last updated on 2026-06-17.

CVE-2017-17911

CVE-2017-17911 is a medium-severity vulnerability in Archon 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% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Archon
Published: 2017-12-27
Last modified: 2026-06-17

Description

packages/core/contact.php in Archon 3.21 rev-1 has XSS in the referer parameter in an index.php?p=core/contact request, aka Open Bug Bounty ID OBB-278503.

Frequently asked questions

What is CVE-2017-17911?: packages/core/contact.php in Archon 3.21 rev-1 has XSS in the referer parameter in an index.php?p=core/contact request, aka Open Bug Bounty ID OBB-278503.
How severe is CVE-2017-17911?: CVE-2017-17911 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-2017-17911 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-17911?: CVE-2017-17911 affects Archon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-17911?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-17911 published?: CVE-2017-17911 was published on 2017-12-27 and last updated on 2026-06-17.

References

https://www.openbugbounty.org/reports/278503/

Affected products (1)

cpe:2.3:a:archon:archon:3.21:*:*:*:*:*:*:*

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