# OWASP Modsecurity vulnerabilities Source: https://junglewise.ai/threats/technologies/modsecurity Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 12 November 2026, 23:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/modsecurity.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 9 vulnerabilities in OWASP Modsecurity: 3 in the last 7 days and 6 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-73857, was published on 9 November 2026. 3 vulnerabilities in the last four weeks, up from none in the four before. ## Counts - Last 7 days: 3 - Last 30 days: 6 - Last 90 days: 6 - All time: 9 (0 critical, 0 exploited in the wild) ## About OWASP Modsecurity Open-source web application firewall module that detects and prevents attacks against web applications. ## Latest OWASP Modsecurity vulnerabilities - [CVE-2026-73857: ModSecurity uninitialized pointer dereference in XML parsing](https://junglewise.ai/threats/cve-2026-73857-modsecurity-is-an-open-source-cross-platform-web-application) (high, CVSS 7.5, published 9 Nov 2026) - [CVE-2026-61812: ModSecurity htmlEntityDecode rule bypass via incomplete entity handling](https://junglewise.ai/threats/cve-2026-61812-modsecurity-is-an-open-source-cross-platform-web-application) (info, published 9 Nov 2026) - [CVE-2026-104259: ModSecurity removeComments bypass via adjacent comments](https://junglewise.ai/threats/cve-2026-104259-modsecurity-is-an-open-source-cross-platform-web-application) (medium, CVSS 5.4, published 9 Nov 2026) - [CVE-2026-73856: ModSecurity response body inspection bypass with mixed-case Content-Type](https://junglewise.ai/threats/cve-2026-73856-modsecurity-is-an-open-source-cross-platform-web-application) (high, CVSS 8.6, published 5 Nov 2026) - [CVE-2026-104269: ModSecurity multipart parser filename precedence bypass](https://junglewise.ai/threats/cve-2026-104269-modsecurity-is-an-open-source-cross-platform-web-application) (high, CVSS 8.6, published 5 Nov 2026) - [CVE-2026-103932: ModSecurity @rxGlobal match-limit bypass](https://junglewise.ai/threats/cve-2026-103932-modsecurity-is-an-open-source-cross-platform-web-application) (medium, CVSS 5.8, published 5 Nov 2026) - [CVE-2026-52761: OWASP ModSecurity WAF rule bypass in utf8toUnicode transformation](https://junglewise.ai/threats/cve-2026-52761-owasp-modsecurity-waf-rule-bypass-in-utf8tounicode-transformation) (medium, CVSS 5.8, published 10 Jul 2026) - [CVE-2026-52747: OWASP ModSecurity WAF bypass via line break stripping in multipart parser](https://junglewise.ai/threats/cve-2026-52747-owasp-modsecurity-waf-bypass-via-line-break-stripping-in) (high, CVSS 8.6, published 10 Jul 2026) - [CVE-2026-30923: OWASP libModSecurity3 denial of service in t:hexDecode transformation](https://junglewise.ai/threats/cve-2026-30923-owasp-libmodsecurity3-denial-of-service-in-t-hexdecode) (high, CVSS 7.5, published 5 May 2026) ## Most severe OWASP Modsecurity vulnerabilities - [CVE-2026-73856: ModSecurity response body inspection bypass with mixed-case Content-Type](https://junglewise.ai/threats/cve-2026-73856-modsecurity-is-an-open-source-cross-platform-web-application) (high, CVSS 8.6, published 5 Nov 2026) - [CVE-2026-104269: ModSecurity multipart parser filename precedence bypass](https://junglewise.ai/threats/cve-2026-104269-modsecurity-is-an-open-source-cross-platform-web-application) (high, CVSS 8.6, published 5 Nov 2026) - [CVE-2026-52747: OWASP ModSecurity WAF bypass via line break stripping in multipart parser](https://junglewise.ai/threats/cve-2026-52747-owasp-modsecurity-waf-bypass-via-line-break-stripping-in) (high, CVSS 8.6, published 10 Jul 2026) - [CVE-2026-30923: OWASP libModSecurity3 denial of service in t:hexDecode transformation](https://junglewise.ai/threats/cve-2026-30923-owasp-libmodsecurity3-denial-of-service-in-t-hexdecode) (high, CVSS 7.5, published 5 May 2026) - [CVE-2026-73857: ModSecurity uninitialized pointer dereference in XML parsing](https://junglewise.ai/threats/cve-2026-73857-modsecurity-is-an-open-source-cross-platform-web-application) (high, CVSS 7.5, published 9 Nov 2026) - [CVE-2026-103932: ModSecurity @rxGlobal match-limit bypass](https://junglewise.ai/threats/cve-2026-103932-modsecurity-is-an-open-source-cross-platform-web-application) (medium, CVSS 5.8, published 5 Nov 2026) - [CVE-2026-52761: OWASP ModSecurity WAF rule bypass in utf8toUnicode transformation](https://junglewise.ai/threats/cve-2026-52761-owasp-modsecurity-waf-rule-bypass-in-utf8tounicode-transformation) (medium, CVSS 5.8, published 10 Jul 2026) - [CVE-2026-104259: ModSecurity removeComments bypass via adjacent comments](https://junglewise.ai/threats/cve-2026-104259-modsecurity-is-an-open-source-cross-platform-web-application) (medium, CVSS 5.4, published 9 Nov 2026) - [CVE-2026-61812: ModSecurity htmlEntityDecode rule bypass via incomplete entity handling](https://junglewise.ai/threats/cve-2026-61812-modsecurity-is-an-open-source-cross-platform-web-application) (info, published 9 Nov 2026) ## Vulnerabilities per week 3 vulnerabilities in the last four weeks, up from none in the four before. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 3 | 0 | 0 | | 9 Nov 2026 | 3 | 0 | 0 | ## Other OWASP technologies - [OWASP Core Rule Set](https://junglewise.ai/threats/technologies/core-rule-set): 3 vulnerabilities - [OWASP Coraza WAF](https://junglewise.ai/threats/technologies/owasp-coraza-waf): 3 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "OWASP Modsecurity vulnerabilities", https://junglewise.ai/threats/technologies/modsecurity, 12 November 2026.