CVE-2025-55191VulnerabilityPublished 15 Oct 2025Updated 6 Sep 2026

Red Hat Security Advisory: Red Hat OpenShift GitOps v1.18.1 security update

Affects Red HatSource GCVE Database

Authoritative record:CVE-2025-55191· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium : upgrade Red Hat to 1.18.1 when convenient.

Data as of 26 Oct 2026, 09:15 UTC

CVSS 3.1 base score

6.5Medium

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

EPSS: 0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 1.18.1

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

Exploitation evidence

Disclosed: evidence found.
CVE published 30 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 26 Oct 2026.

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

Upgrade Red Hat to 1.18.1.

Affected software

Product	Affected	Fixed in
Red Hat Product Security Red Hat	Affected >=1.18.0 <1.18.1 Red Hat Red Hat OpenShift GitOps Red Hat OpenShift GitOps 1.18 amd64 registry.redhat.io/openshift-gitops-1/argo-rollouts-rhel8@sha256:f8f99349426e5ab977acdda440c22e5d04187ca43e05f91c8b5bbb823eaf59f6_amd64	Fixed in 1.18.1

AI-suggested

An official security update to Red Hat OpenShift GitOps version 1.18.1 is available and should be applied to remediate this vulnerability. Prior to applying this update, ensure all previously released errata relevant to your system are installed. Systems configured to automatically restart the Argo CD service upon crash may partially mitigate availability impact but do not replace applying the official fix. Refer to Red Hat's advisory and documentation for update procedures.

Description

An update is now available for Red Hat OpenShift GitOps. Bug Fix(es) and Enhancement(s): * GITOPS-7606 (ApplicationSet: Bitbucket SCM/PR generator leaks HTTP connections) * GITOPS-7953 (Default resource exclusions list not updated in ArgoCD CR template) * GITOPS-7955 ([1.18] ArgoCD UI fails when Progressive sync is enabled in AppSet but not controller)

Impact

The vulnerability can cause the Argo CD server to crash due to a race condition when handling repository credentials during concurrent operations on the same repository URL. This leads to a denial of service affecting the availability of the Argo CD server. The host system running Argo CD is not affected. No confidentiality or integrity impacts are reported. Exploitation requires valid API tokens with repository resource permissions, limiting the attack surface.

Summary

CVE-2025-55191 describes a race condition in the Argo CD GitOps tool's repository credentials handler. When concurrent operations target the same repository URL, the server may panic and crash, resulting in a denial of service. Triggering this requires a valid API token with create, update, or delete permissions on repository resources. The vulnerability affects Red Hat OpenShift GitOps versions >=1.18.0 and <1.18.1. The issue is tracked under Red Hat Bugzilla 2400562 and fixed in version 1.18.1. The vulnerability is classified under CWE-362 (race condition) and related CWEs. The availability impact is limited to the Argo CD server process; the underlying host is not compromised. Red Hat has released an official security advisory and update to remediate this vulnerability.

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (opens in a new tab)
Class weaknessLikelihood of exploit: MediumOWASP Top 10 A06:2025: Insecure Design (opens in a new tab)
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
Architecture and Design
In languages that support it, use synchronization primitives. Only wrap these around critical code to minimize the impact on performance.
Architecture and Design
Use thread-safe capabilities such as the data access abstraction in Spring.
Architecture and Design
Minimize the usage of shared resources in order to remove as much complexity as possible from the control flow and to reduce the likelihood of unexpected conditions occurring.
OWASP Cheat Sheets
Abuse Case (opens in a new tab)
Secure Design Principles (opens in a new tab)
OWASP ASVS 4.0.3
V1.11.2 (opens in a new tab)
Attack patterns
Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions (opens in a new tab)
Leveraging Race Conditions (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-248Uncaught Exception (opens in a new tab)
Base weaknessOWASP Top 10 A10:2025: Mishandling of Exceptional Conditions (opens in a new tab)
An exception is thrown from a function, but it is not caught.
OWASP Cheat Sheets
Logging (opens in a new tab)
Error Handling (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-476NULL Pointer Dereference (opens in a new tab)
Base weaknessLikelihood of exploit: MediumCWE Top 25 (2025): #13OWASP Top 10 A10:2025: Mishandling of Exceptional Conditions (opens in a new tab)
The product dereferences a pointer that it expects to be valid but is NULL.
Implementation
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished.
Requirements
Select a programming language that is not susceptible to these issues.
Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
OWASP Cheat Sheets
Logging (opens in a new tab)
Error Handling (opens in a new tab)
OWASP ASVS 4.0.3
V11.1.7 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-617Reachable Assertion (opens in a new tab)
Base weakness
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
Implementation
Make sensitive open/close operation non reachable by directly user-controlled data (e.g. open/close resources)
Implementation · Input Validation
Perform input validation on user data.
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 16 Aug 2026, 18:22 UTC

WeaknessesCWE-362, CWE-248, CWE-476 +1

Technical details

References

Community reviews

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