How severe is CVE-2015-0899?

CVE-2015-0899 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2015-0899 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-0899?

CVE-2015-0899 primarily affects Apache Struts. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-0899?

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-2015-0899 published?

CVE-2015-0899 was published on 2016-07-04 and last updated on 2026-06-17.

CVE-2015-0899

CVE-2015-0899 is a high-severity vulnerability in Apache Struts with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 21% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 21% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Apache Struts
Published: 2016-07-04
Last modified: 2026-06-17

Description

The MultiPageValidator implementation in Apache Struts 1 1.1 through 1.3.10 allows remote attackers to bypass intended access restrictions via a modified page parameter.

Frequently asked questions

What is CVE-2015-0899?: The MultiPageValidator implementation in Apache Struts 1 1.1 through 1.3.10 allows remote attackers to bypass intended access restrictions via a modified page parameter.
How severe is CVE-2015-0899?: CVE-2015-0899 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2015-0899 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-0899?: CVE-2015-0899 primarily affects Apache Struts. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-0899?: 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-2015-0899 published?: CVE-2015-0899 was published on 2016-07-04 and last updated on 2026-06-17.

References

Affected products (17)

cpe:2.3:a:apache:struts:1.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.1:b1:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.1:b2:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.1:b3:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.1:rc1:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.1:rc2:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.2.6:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.2.7:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.2.8:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.2.9:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.3.5:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.3.8:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:1.3.10:*:*:*:*:*:*:*

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