CVE-2026-107833

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Source
https://cve.org/CVERecord?id=CVE-2026-107833
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107833.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-107833
Aliases
Published
2026-10-09T17:39:48Z
Modified
2026-10-11T02:46:55Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
OWASP Coraza WAF: Unbounded recursion in JSON response body processor causes CPU exhaustion
Details

OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.0, ProcessResponse in internal/bodyprocessors/json.go passes the ignoreJSONRecursionLimit value of -1 to readJSON, while the recursive guard only stops at zero. A network attacker who can cause an application protected by Coraza to return deeply nested JSON can make response-body processing perform quadratic work, consuming one CPU core for seconds per response within the default ResponseBodyLimit. Request JSON processing is not affected by this specific path because it uses the configured request recursion limit, and exploitation requires response-body inspection to be enabled. This issue is fixed in version 3.8.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-674"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107833.json"
}
References

Affected packages

Git / github.com/corazawaf/coraza

Affected ranges

Type
GIT
Repo
https://github.com/corazawaf/coraza
Events
Introduced
ad50864cfa00f5143fff7f6877847326fdc4b394
Fixed
cae3c7407e7b84372c207033de03f15f89bf351a
Fixed
19b86824f5e97eba72b289a81d5b3c1260292ff0
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "3.0.0"
        },
        {
            "fixed": "3.8.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v3.*
v3.0.0
v3.0.1
v3.0.2
v3.0.3
v3.0.4
v3.1.0
v3.2.0
v3.2.1
v3.3.0
v3.3.1
v3.3.2
v3.3.3
v3.4.0
v3.5.0
v3.6.0
v3.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107833.json"