High severity · published Feb 12, 2026
CVE-2025-70886
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
7.5
CVSS
0.5%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HA
Halo · Halo
through 2.22.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-70886
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-70886
Exploit
https://github.com/HowieHz/CVE-2025-70886
Exploit
https://github.com/halo-dev/halo/issues/7890
Exploit
https://howiehz.top/archives/halo-comment-payload-tweaker
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