How severe is CVE-2015-4639?

CVE-2015-4639 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-4639 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4639?

CVE-2015-4639 primarily affects Koha. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-4639?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-4639 published?

CVE-2015-4639 was published on 2017-07-21 and last updated on 2026-06-17.

CVE-2015-4639

CVE-2015-4639 is a high-severity vulnerability in Koha with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Koha
Published: 2017-07-21
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in opac-addbybiblionumber.pl in Koha 3.14.x before 3.14.16, 3.16.x before 3.16.12, and 3.20.x before 3.20.1 allows remote attackers to inject arbitrary web script or HTML via a crafted list name.

Frequently asked questions

What is CVE-2015-4639?: Cross-site scripting (XSS) vulnerability in opac-addbybiblionumber.pl in Koha 3.14.x before 3.14.16, 3.16.x before 3.16.12, and 3.20.x before 3.20.1 allows remote attackers to inject arbitrary web script or HTML via a crafted list name.
How severe is CVE-2015-4639?: CVE-2015-4639 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-4639 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4639?: CVE-2015-4639 primarily affects Koha. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-4639?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-4639 published?: CVE-2015-4639 was published on 2017-07-21 and last updated on 2026-06-17.

References

Affected products (36)

cpe:2.3:a:koha:koha:3.14.00:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.00:alpha1:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.00:alpha2:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.00:beta:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.01:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.02:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.03:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.04:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.05:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.06:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.07:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.08:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.09:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.10:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.11:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.12:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.13:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.14:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.14.15:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.00:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.00:beta:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.00:pkg:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.00:rc:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.01:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.02:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.03:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.04:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.05:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.06:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.07:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.08:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.09:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.10:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.16.11:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.20.00:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:3.20.00:beta:*:*:*:*:*:*

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