{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2018-19131 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2018-19131 is a medium-severity cross-site scripting vulnerability in Squid-Cache Squid, published on 9 Nov 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2018-19131 and fix it if it is affected.\n\nWhat it is: CVE-2018-19131 is a medium-severity cross-site scripting vulnerability in Squid-Cache Squid, published on 9 Nov 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2018-19131 in the wild and no public exploit code.\n\nAffected product: Squid-Cache Squid. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2018-19131/ (Markdown: https://insights.sbomify.com/CVE-2018-19131/index.md)","id":"CVE-2018-19131","markdown":"https://insights.sbomify.com/CVE-2018-19131/index.md","name":"CVE-2018-19131","record":{"aliases":["CVE-2018-1000819","DEBIAN-CVE-2018-19131","GHSA-jr78-3r97-gpxf","SUSE-SU-2018:3790-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Squid proxy server","requires_auth":"none","summary":"An attacker can execute arbitrary scripts in the victim's browser via a crafted X.509 certificate during Squid proxy error page generation.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"squid","vendor":"squid-cache"}],"cvss":{"score":6.1,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Squid before 4.4 has XSS via a crafted X.509 certificate during HTTP(S) error page generation for certificate errors.","ecosystems":["SUSE:Linux Enterprise Server 11 SP4","SUSE:Linux Enterprise Server for SAP Applications 11 SP4"],"exploits":{"exploitdb":0,"first_seen":"2018-11-13","github_poc":1,"max_poc_stars":18,"metasploit":0,"nuclei":0,"refs":[{"date":"2018-11-13T13:40:10Z","kind":"github_poc","ref":"https://github.com/JonathanWilbur/CVE-2018-19131","stars":18,"title":"Proof-of-Concept exploit of CVE-2018-19131: Squid Proxy XSS via X.509 Certificate"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Cross-site scripting in n/a","id":"CVE-2018-19131","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"squid-cache:squid","products":["squid-cache:squid"],"type":"xss","year":"2018"},"n_packages":2,"n_references":3,"next":{"headline":"Denial of service in n/a","id":"CVE-2018-19132"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Server 11 SP4","fixed":["3.1.23-8.16.37.9.1"],"introduced":["0"],"last_affected":[],"package":"squid3","purl":"pkg:rpm/suse/squid3\u0026distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4","source":"SUSE-SU-2018:3790-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 11 SP4","fixed":["3.1.23-8.16.37.9.1"],"introduced":["0"],"last_affected":[],"package":"squid3","purl":"pkg:rpm/suse/squid3\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4","source":"SUSE-SU-2018:3790-1"}],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2018-19130"},"products":["n/a"],"published":"2018-11-09","related":[{"cvss_score":10,"headline":"Squid vulnerable to information disclosure via authentication credential leakage in error handling","id":"CVE-2025-62168","kev_date_added":null,"published":"2025-10-17"},{"cvss_score":9.3,"headline":"Squid's URN Handling can lead to Buffer Overflow","id":"CVE-2025-54574","kev_date_added":null,"published":"2025-08-01"},{"cvss_score":9.2,"headline":"Squid vulnerable to Denial of Service in ICP Request handling","id":"CVE-2026-33526","kev_date_added":null,"published":"2026-03-26"},{"cvss_score":8.7,"headline":"Squid has Denial of Service in ICP Response handling","id":"CVE-2026-32748","kev_date_added":null,"published":"2026-03-26"},{"cvss_score":8.6,"headline":"SQUID-2023:10 Denial of Service in HTTP Request parsing","id":"CVE-2023-50269","kev_date_added":null,"published":"2023-12-14"},{"cvss_score":8.6,"headline":"Denial of Service in HTTP Message Processing in Squid","id":"CVE-2023-49285","kev_date_added":null,"published":"2023-12-04"},{"cvss_score":8.6,"headline":"Denial of Service in Helper Process management","id":"CVE-2023-49286","kev_date_added":null,"published":"2023-12-04"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-16","vendors":["n/a"]},"summary":"An attacker can execute arbitrary scripts in the victim's browser via a crafted X.509 certificate during Squid proxy error page generation.","url":"https://insights.sbomify.com/CVE-2018-19131/"}