How severe is CVE-2017-5635?

CVE-2017-5635 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 high, integrity none, and availability none.

Is CVE-2017-5635 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-5635?

CVE-2017-5635 primarily affects Apache Nifi. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-5635?

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-2017-5635 published?

CVE-2017-5635 was published on 2017-10-19 and last updated on 2026-06-17.

CVE-2017-5635

CVE-2017-5635 is a high-severity vulnerability in Apache Nifi with a CVSS 3.x base score of 7.5. 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-287.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Apache Nifi
Published: 2017-10-19
Last modified: 2026-06-17

Description

In Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, if an anonymous user request is replicated to another node, the originating node identity is used rather than the "anonymous" user.

Frequently asked questions

What is CVE-2017-5635?: In Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, if an anonymous user request is replicated to another node, the originating node identity is used rather than the "anonymous" user.
How severe is CVE-2017-5635?: CVE-2017-5635 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 high, integrity none, and availability none.
Is CVE-2017-5635 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-5635?: CVE-2017-5635 primarily affects Apache Nifi. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-5635?: 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-2017-5635 published?: CVE-2017-5635 was published on 2017-10-19 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:apache:nifi:0.7.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:nifi:0.7.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:nifi:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:nifi:1.1.1:*:*:*:*:*:*:*

More vulnerabilities in Apache Nifi

CVE-2018-1309 — Critical (CVSS 9.8): Apache NiFi External XML Entity issue in SplitXML processor. Malicious XML content could cause information disclosure…
CVE-2017-15697 — Critical (CVSS 9.8): A malicious X-ProxyContextPath or X-Forwarded-Context header containing external resources or embedded code could cause…
CVE-2017-5636 — Critical (CVSS 9.8): In Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, the proxy chain…
CVE-2026-39816 — High (CVSS 8.8): The optional extension component TinkerpopClientService is missing the Restricted annotation with the Execute Code…
CVE-2025-66524 — High (CVSS 8.8): Apache NiFi 1.20.0 through 2.6.0 include the GetAsanaObject Processor, which requires integration with a configurable…
CVE-2023-36542 — High (CVSS 8.8): Apache NiFi 0.0.2 through 1.22.0 include Processors and Controller Services that support HTTP URL references for…

All CVEs affecting Apache Nifi →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →