CVE-2025-61735VulnerabilityPublished 2 Oct 2025Updated 4 Nov 2025

CVE-2025-61735: Apache Kylin · Server-Side Request Forgery (SSRF)

Affects Apache KylinSource CVE Database V5

Not known to be exploited · CVSS 7.3 High · fixed in 5.0.3 : patch Apache Kylin soon.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

7.3High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 1.0% chance of exploitation in 30 days – higher than 63% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 5.0.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 2 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Apache Software Foundation Apache Kylin	Affected =4.0.0	Fixed in–

AI-suggested

1. Upgrade Apache Kylin to version 5.0.3 immediately to apply the official patch addressing the SSRF vulnerability. 2. Restrict network access to Apache Kylin servers by implementing strict firewall rules and network segmentation, limiting inbound traffic to trusted sources only. 3. Enforce strong authentication and authorization controls for system and project admin accounts to reduce the risk of privilege escalation or misuse. 4. Monitor network traffic and logs for unusual outbound requests originating from Kylin servers that could indicate exploitation attempts. 5. Implement web application firewalls (WAFs) with rules designed to detect and block SSRF attack patterns targeting Kylin endpoints. 6. Conduct regular security assessments and penetration testing focusing on SSRF and related vulnerabilities in the analytics environment. 7. Educate system administrators and security teams about SSRF risks and ensure incident response plans include procedures for SSRF exploitation scenarios. 8. Where possible, disable or tightly control any functionality in Kylin that allows server-side HTTP requests to arbitrary URLs or internal resources.

Description

Server-Side Request Forgery (SSRF) vulnerability in Apache Kylin. This issue affects Apache Kylin: from 4.0.0 through 5.0.2. You are fine as long as the Kylin's system and project admin access is well protected. Users are recommended to upgrade to version 5.0.3, which fixes the issue.

Impact

For European organizations, the impact of CVE-2025-61735 can be substantial, especially for those utilizing Apache Kylin in data analytics, finance, telecommunications, and government sectors. Exploitation could lead to unauthorized access to sensitive internal systems or data, undermining confidentiality. Attackers might pivot from the vulnerable Kylin server to internal networks, potentially compromising integrity by manipulating analytics results or injecting malicious data. Availability could also be affected if attackers leverage SSRF to trigger denial-of-service conditions on internal services or the Kylin server itself. Given the reliance on big data analytics for decision-making and regulatory compliance in Europe, such disruptions could have operational and reputational consequences. Additionally, GDPR and other data protection regulations impose strict requirements on data security; a breach facilitated by this vulnerability could result in regulatory penalties. The lack of required authentication lowers the barrier for attackers, increasing the likelihood of exploitation if systems are exposed to untrusted networks. Organizations with Kylin instances accessible from the internet or poorly segmented internal networks are at higher risk.

CWE-918Server-Side Request Forgery (SSRF) (opens in a new tab)
Base weaknessCWE Top 25 (2025): #22OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
OWASP Cheat Sheets
Server Side Request Forgery Prevention (opens in a new tab)
Unvalidated Redirects and Forwards (opens in a new tab)
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V12.6.1 (opens in a new tab)
V5.2.6 (opens in a new tab)
Attack patterns
Server Side Request Forgery (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 4 Nov 2025, 22:15 UTC

WeaknessesCWE-918

Technical details

References

Community reviews

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