High severity7.5NVD Advisory· Published May 21, 2025· Updated Jun 17, 2026
CVE-2025-47947
CVE-2025-47947
Description
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case (in stable released versions): when the payload's content type is application/json, and there is at least one rule which does a sanitiseMatchedBytes action. A patch is available at pull request 3389 and expected to be part of version 2.9.9. No known workarounds are available.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
26- Range: <=2.9.8
- osv-coords24 versionspkg:bitnami/modsecuritypkg:bitnami/modsecurity2pkg:rpm/almalinux/mod_securitypkg:rpm/almalinux/mod_security-mlogcpkg:rpm/opensuse/apache2-mod_security2&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/apache2-mod_security2&distro=openSUSE%20Tumbleweedpkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP6pkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP7pkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Manager%20Proxy%204.3pkg:rpm/suse/apache2-mod_security2&distro=SUSE%20Manager%20Server%204.3
< 3.0.12+ 23 more
- (no CPE)range: < 3.0.12
- (no CPE)range: < 2.9.9
- (no CPE)range: < 2.9.6-2.el9_6
- (no CPE)range: < 2.9.6-2.el9_6
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.9.10-1.1
- (no CPE)range: < 2.9.2-150000.3.12.1
- (no CPE)range: < 2.9.2-150000.3.12.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.8.0-7.9.1
- (no CPE)range: < 2.9.2-150000.3.12.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.9.2-150000.3.12.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.8.0-7.9.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- (no CPE)range: < 2.9.4-150400.3.9.1
- Range: <= 2.9.8
Patches
Vulnerability mechanics
References
2- github.com/owasp-modsecurity/ModSecurity/pull/3389nvdIssue TrackingPatch
- github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8rnvdExploitVendor Advisory
News mentions
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