CVE-2025-9958 | Insertion of Sensitive Information Into Sent Data in GitLab

An issue has been discovered in GitLab CE/EE affecting all versions from 14.10 before 18.2.7, 18.3 before 18.3.3, and 18.4 before 18.4.1, that could have allowed Guest users to access sensitive information stored in virtual registry configurations.

Published: 2025-09-26 Last update: 2025-11-06 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2025-9958 is rated Low Risk (31/100): CVSS High severity, with low exploitation likelihood (EPSS 0.01%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-9958

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-09-26 0.01%

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-9958

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.7 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
3.1 4.0 [email protected]

Weakness enumeration for CVE-2025-9958

OS Trackers for CVE-2025-9958

vendor priority summary link
debian not yet assigned CVE-2025-9958 not yet assigned priority: Debian including 1 source packages (gitlab), 1 status rows across 1 suites (sid): open 1. https://security-tracker.debian.org/tracker/CVE-2025-9958

Affected software / configurations for CVE-2025-9958

Vendor Product Version Raw CPE
gitlab gitlab >= 14.10.0, < 18.2.7 cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
gitlab gitlab >= 14.10.0, < 18.2.7 cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
gitlab gitlab >= 18.3.0, < 18.3.3 cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
gitlab gitlab >= 18.3.0, < 18.3.3 cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
gitlab gitlab 18.4.0 cpe:2.3:a:gitlab:gitlab:18.4.0:*:*:*:community:*:*:*
gitlab gitlab 18.4.0 cpe:2.3:a:gitlab:gitlab:18.4.0:*:*:*:enterprise:*:*:*

References for CVE-2025-9958

cvelogic Threat Intelligence