CVE-2025-70886
Published: 12 February 2026
Summary
CVE-2025-70886 is a high-severity Uncontrolled Resource Consumption (CWE-400) vulnerability in Halo Halo. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 41.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Limiting concurrent sessions directly prevents uncontrolled resource consumption by capping the number of active sessions per user or account.
Analysis identifies uncontrolled resource consumption indicative of denial-of-service or abuse attempts.
Contingency plan testing includes resource exhaustion scenarios to verify recovery, making it harder for attackers to sustain exploits that cause uncontrolled consumption.
Updated contingency plans include current procedures to detect, contain, and recover from resource exhaustion, limiting an attacker's ability to sustain impact from uncontrolled consumption.
Alternate site allows resumption of operations if resource exhaustion at the primary site is exploited to cause unavailability.
Alternate telecommunications services enable resumption of essential functions when primary services become unavailable due to uncontrolled resource consumption.
The team can analyze and respond to resource exhaustion incidents, reducing the impact of attacks that exploit uncontrolled consumption weaknesses.
Timely maintenance support and spare parts enable rapid recovery from failures induced by uncontrolled resource consumption, shortening the impact window of denial-of-service attacks.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
CVE enables remote exploitation of a public-facing comment endpoint (T1190) via crafted payload to trigger application-level resource exhaustion DoS (T1499.004).
NVD Description
An issue in halo v.2.22.4 and before allows a remote attacker to cause a denial of service via a crafted payload to the public comment submission endpoint
Deeper analysisAI
CVE-2025-70886 is a denial-of-service vulnerability affecting Halo versions 2.22.4 and earlier. The flaw, published on 2026-02-12, stems from an issue in the public comment submission endpoint that allows a remote attacker to trigger a DoS condition via a crafted payload. It is linked to CWE-400 (Uncontrolled Resource Consumption) and carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), indicating high severity due to its network accessibility and impact on availability.
The vulnerability can be exploited by any unauthenticated remote attacker with low complexity and no user interaction required. Exploitation involves submitting a specially crafted payload to the public comment endpoint, leading to significant resource exhaustion and high-impact disruption of service availability on the affected Halo instance.
Mitigation details are available in related advisories and discussions, including the GitHub repository at https://github.com/HowieHz/CVE-2025-70886, the Halo project issue tracker at https://github.com/halo-dev/halo/issues/7890, and a technical blog post at https://howiehz.top/archives/halo-comment-payload-tweaker.
Details
- CWE(s)