{"answers":{"affected":"2 open source packages ship an affected version, including modsecurity and modsecurity2. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-52761 in the wild and no public exploit code.","fix":"Upgrade modsecurity to 3.0.16 or later.","what":"CVE-2026-52761 is a medium-severity vulnerability in owasp-modsecurity ModSecurity, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-52761 and fix it if it is affected.\n\nWhat it is: CVE-2026-52761 is a medium-severity vulnerability in owasp-modsecurity ModSecurity, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-52761 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- modsecurity (Bitnami): affected from 3.0.0; fixed in 3.0.16\n- modsecurity2 (Bitnami): affected from 3.0.0; fixed in 3.0.16\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-52761/ (Markdown: https://insights.sbomify.com/CVE-2026-52761/index.md)","id":"CVE-2026-52761","markdown":"https://insights.sbomify.com/CVE-2026-52761/index.md","name":"CVE-2026-52761","record":{"aliases":["BIT-modsecurity-2026-52761","BIT-modsecurity2-2026-52761","DEBIAN-CVE-2026-52761","GHSA-qjgm-7gp4-f8qq","UBUNTU-CVE-2026-52761"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Web Application Firewall","requires_auth":"none","summary":"Attackers can bypass ModSecurity WAF rules on i386 systems due to a buffer size error in the utf8toUnicode transformation.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"modsecurity","vendor":"owasp"}],"cvss":{"score":5.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-467","name":"Use of sizeof() on a Pointer Type"}],"description":"ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. From 3.0.0 through 3.0.15, the t:utf8toUnicode transformation in src/actions/transformations/utf8_to_unicode.cc produces wrong output on i386 architecture because snprintf uses sizeof on a char pointer rather than the length of the unicode buffer, allowing rules that use this transformation to be bypassed on i386 architecture. This issue is fixed in version 3.0.16.","ecosystems":["Bitnami"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"ModSecurity: Transformation utf8toUnicode produces wrong output on i386 architecture","id":"CVE-2026-52761","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"YesWiki: Authenticated (Admin) Server-Side Template Injection to Remote Code Execution via Bazar Semantic Templates","id":"CVE-2026-52762"},"packages":[{"ecosystem":"Bitnami","fixed":["3.0.16"],"introduced":["3.0.0"],"last_affected":[],"package":"modsecurity","purl":"pkg:bitnami/modsecurity","source":"BIT-modsecurity-2026-52761"},{"ecosystem":"Bitnami","fixed":["3.0.16"],"introduced":["3.0.0"],"last_affected":[],"package":"modsecurity2","purl":"pkg:bitnami/modsecurity2","source":"BIT-modsecurity2-2026-52761"}],"prev":{"headline":"Apache ActiveMQ, Apache ActiveMQ Web Console: Stored XSS via Unescaped values in ActiveMQ Web Console","id":"CVE-2026-52760"},"products":["ModSecurity"],"published":"2026-07-10","related":[{"cvss_score":8.6,"headline":"Security feature bypass in ModSecurity","id":"CVE-2026-52747","kev_date_added":null,"published":"2026-07-10"},{"cvss_score":8.6,"headline":"WAF bypass of the ModSecurity v3 release line","id":"CVE-2024-1019","kev_date_added":null,"published":"2024-01-30"},{"cvss_score":8.2,"headline":"ModSecurity: Unsigned integer underflow in @verifySSN / @verifyCPF / @verifySVNR operators","id":"CVE-2026-42268","kev_date_added":null,"published":"2026-05-12"},{"cvss_score":8.2,"headline":"libModSecurity3 denial of service via segfault when using t:hexDecode on single-character query strings","id":"CVE-2026-30923","kev_date_added":null,"published":"2026-05-05"},{"cvss_score":7.5,"headline":"ModSecurity has possible DoS vulnerability in sanitiseArg action","id":"CVE-2025-48866","kev_date_added":null,"published":"2025-06-02"},{"cvss_score":7.5,"headline":"Trustwave ModSecurity 3.x before 3.0.10 has Inefficient Algorithmic Complexity.","id":"CVE-2023-38285","kev_date_added":null,"published":"2023-07-26"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2023-28882","kev_date_added":null,"published":"2023-04-28"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-13","vendors":["owasp-modsecurity"]},"summary":"Attackers can bypass ModSecurity WAF rules on i386 systems due to a buffer size error in the utf8toUnicode transformation.","url":"https://insights.sbomify.com/CVE-2026-52761/"}