AZL-113083

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Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-113083.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-113083
Upstream
Published
2026-11-09T22:18:53Z
Modified
2026-11-10T14:17:36Z
Summary
CVE-2026-61812 affecting package mod_security 2.9.7-8
Details

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Prior to 2.9.15 and 3.0.17, t:htmlEntityDecode recognizes only a small subset of named HTML entities, so rules that depend on the transformation can inspect different bytes than a browser or backend. Attackers can encode ASCII separators and operators with unhandled entity names, including aliases, to bypass rules that depend on the transformation. The v3 decoder also accepts prefix matches instead of requiring an exact entity-token length, which can transform invalid longer names into different bytes. This issue is fixed in versions 2.9.15 and 3.0.17.

References

Affected packages

Azure Linux:3 / mod_security

Package

Name
mod_security
Purl
pkg:rpm/azure-linux/mod_security

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Last Affected
2.9.7-8

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-113083.json"