{"answers":{"affected":"5 open source packages ship an affected version, including github.com/corazawaf/coraza/v3, github.com/corazawaf/coraza and github.com/corazawaf/coraza/v2.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-107835 exists.","fix":"Upgrade github.com/corazawaf/coraza/v3 to 3.8.1 or later.","what":"CVE-2026-107835 is a medium-severity vulnerability in corazawaf coraza, published on 9 Oct 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-2026-107835 and fix it if it is affected.\n\nWhat it is: CVE-2026-107835 is a medium-severity vulnerability in corazawaf coraza, published on 9 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-107835 exists.\n\nAffected packages and fixed versions:\n- github.com/corazawaf/coraza/v3 (Go): affected all versions; fixed in 3.8.1\n- github.com/corazawaf/coraza/v3 (Go): affected all versions; fixed in 3.8.1\n- github.com/corazawaf/coraza/v3 (Go): affected all versions; fixed in 3.8.1\n- github.com/corazawaf/coraza (Go): affected all versions; no fix listed\n- github.com/corazawaf/coraza/v2 (Go): affected all versions; no fix listed\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-2026-107835/ (Markdown: https://insights.sbomify.com/CVE-2026-107835/index.md)","id":"CVE-2026-107835","markdown":"https://insights.sbomify.com/CVE-2026-107835/index.md","name":"CVE-2026-107835","record":{"aliases":["GHSA-g4qm-m288-5cp9","GO-2026-6694"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Go WAF library","requires_auth":"none","summary":"An attacker can bypass WAF rules by crafting cookie headers that are parsed differently by Coraza and the backend application.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-436","name":"Interpretation Conflict"}],"description":"OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. Prior to 3.8.1, internal/cookies.ParseCookies in internal/cookies/cookies.go handles boundary ASCII control characters and control-only or empty cookie names differently from several backend cookie parsers. An unauthenticated attacker can craft a Cookie header so Coraza indexes or drops a cookie under a different name or value from the backend application, causing rules targeting REQUEST_COOKIES or REQUEST_COOKIES_NAMES to miss application-visible attacker data. Exploitation depends on the backend parser and affected rule scope, and interior control characters with inconsistent backend behavior are outside this advisory's remediation. This issue is fixed in version 3.8.1.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"OWASP Coraza WAF: Cookie Parser Confusion","id":"CVE-2026-107835","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":5,"n_references":4,"next":{"headline":"RIOT: nanoCoAP Block2 client slice handling underflows on inconsistent server-controlled block size","id":"CVE-2026-107836"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/corazawaf/coraza","purl":"pkg:golang/github.com/corazawaf/coraza","source":"GO-2026-6694"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/corazawaf/coraza/v2","purl":"pkg:golang/github.com/corazawaf/coraza/v2","source":"GO-2026-6694"},{"ecosystem":"Go","fixed":["3.8.1"],"introduced":["0"],"last_affected":[],"package":"github.com/corazawaf/coraza/v3","purl":null,"source":"GHSA-g4qm-m288-5cp9"},{"ecosystem":"Go","fixed":["3.8.1"],"introduced":["0"],"last_affected":[],"package":"github.com/corazawaf/coraza/v3","purl":"pkg:golang/github.com/corazawaf/coraza/v3","source":"GHSA-g4qm-m288-5cp9"},{"ecosystem":"Go","fixed":["3.8.1"],"introduced":["0"],"last_affected":[],"package":"github.com/corazawaf/coraza/v3","purl":"pkg:golang/github.com/corazawaf/coraza/v3","source":"GO-2026-6694"}],"prev":{"headline":"OWASP Coraza WAF: Resource exhaustion via deferred file handle accumulation in multipart body processor","id":"CVE-2026-107834"},"products":["coraza"],"published":"2026-10-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-09","vendors":["corazawaf"]},"summary":"An attacker can bypass WAF rules by crafting cookie headers that are parsed differently by Coraza and the backend application.","url":"https://insights.sbomify.com/CVE-2026-107835/"}