CVE-2025-30755VulnerabilityPublished 18 Sep 2025

CVE-2025-30755: OpenGrok 1.14.1 has a reflected Cross-Site Scripting (XSS) issue when producing the cross reference page

Affects Oracle OpenGrokSource CVE Database V5

Not known to be exploited · CVSS 6.1 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

6.1Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
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: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Sep 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 2026-10-26.

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
Oracle Corporation OpenGrok	Affected =1.14.1	Fixed in–

AI-suggested

To mitigate CVE-2025-30755, European organizations should implement the following specific actions: 1) Immediately review and restrict access to OpenGrok instances, ensuring they are not publicly accessible and are protected behind strong authentication and network segmentation. 2) Educate developers and users about the risks of clicking on untrusted links, especially those referencing internal tools like OpenGrok. 3) Implement web application firewalls (WAFs) with rules designed to detect and block reflected XSS attempts targeting the 'revision' parameter or similar inputs. 4) Apply input validation and output encoding at the application layer if custom modifications or wrappers around OpenGrok exist, sanitizing all user-supplied parameters before rendering. 5) Monitor logs for suspicious requests containing unusual or script-like content in the revision parameter. 6) Stay alert for official patches or updates from Oracle and plan timely deployment once available. 7) Consider deploying Content Security Policy (CSP) headers to restrict script execution contexts in browsers accessing OpenGrok. These targeted measures go beyond generic advice by focusing on access control, user awareness, and layered defenses tailored to the specific vulnerability vector.

Description

OpenGrok 1.14.1 has a reflected Cross-Site Scripting (XSS) issue when producing the cross reference page. This happens through improper handling of the revision parameter. The application reflects unsanitized user input into the HTML output.

Impact

For European organizations, especially those involved in software development, IT services, or technology sectors, this vulnerability poses a moderate risk. OpenGrok is often deployed internally to facilitate code search and review, meaning that exploitation typically requires an attacker to lure internal users into clicking malicious links. Successful exploitation could lead to unauthorized disclosure of proprietary source code, intellectual property theft, or manipulation of development workflows. This can have downstream effects on software quality, compliance with data protection regulations such as GDPR, and overall organizational security posture. Additionally, if OpenGrok instances are exposed to less trusted networks or external users, the risk of exploitation increases. The reflected XSS could also be leveraged as a stepping stone for more complex attacks, including phishing campaigns targeting developers or injection of malicious payloads into development environments. While the vulnerability does not directly impact availability, the confidentiality and integrity impacts are significant enough to warrant prompt attention in European contexts where software security and data protection are tightly regulated.

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #1OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Implementation · Architecture and Design
Understand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages.
Architecture and Design · Implementation · Attack Surface Reduction
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide…
OWASP Cheat Sheets
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Injection Prevention (opens in a new tab)
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
OWASP ASVS 4.0.3
V5.3.3 (opens in a new tab)
V1.5.1 (opens in a new tab)
Attack patterns
XSS Using MIME Type Mismatch (opens in a new tab)
DOM-Based XSS (opens in a new tab)
Reflected XSS (opens in a new tab)
Stored XSS (opens in a new tab)
Cross-Site Scripting (XSS) (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

oracle.com/security-alerts/all-oracle-cves-outside-other-oracle-public-documents.html (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Sep 2025, 01:04 UTC

WeaknessesCWE-79

Technical details

References

Community reviews

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