{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-66339 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-66339 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 24 Jul 2026. 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-2026-66339 and fix it if it is affected.\n\nWhat it is: CVE-2026-66339 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 24 Jul 2026. 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-2026-66339 in the wild and no public exploit code.\n\nAffected product: Redhat Enterprise Linux. 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-2026-66339/ (Markdown: https://insights.sbomify.com/CVE-2026-66339/index.md)","id":"CVE-2026-66339","markdown":"https://insights.sbomify.com/CVE-2026-66339/index.md","name":"CVE-2026-66339","record":{"aliases":["AZL-94098","DEBIAN-CVE-2026-66339","ECHO-3341-e81d-bf5b","GHSA-vh9q-f797-xwg7","UBUNTU-CVE-2026-66339"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"HTTP client library","requires_auth":"none","summary":"Attackers can capture proxy credentials when libsoup incorrectly sends Proxy-Authorization headers to destination servers over HTTPS tunnels.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"libsoup","vendor":"gnome"},{"product":"enterprise_linux","vendor":"redhat"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-201","name":"Insertion of Sensitive Information Into Sent Data"}],"description":"A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel to the destination server. This allows the destination server to capture proxy credentials, leading to information disclosure.","ecosystems":[],"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":"Libsoup: libsoup: proxy credentials leak to destination server via proxy-authorization header in connect tunnels","id":"CVE-2026-66339","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"redhat:enterprise_linux","products":["redhat:enterprise_linux"],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Mira Hormone Monitor, Mira Android App Improper restriction of excessive authentication attempts","id":"CVE-2026-66340"},"packages":[],"prev":{"headline":"Libsoup: libsoup: http request smuggling via permissive chunk-size parsing in soup_body_input_stream_read_chunked()","id":"CVE-2026-66338"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9"],"published":"2026-07-24","related":[{"cvss_score":8.6,"headline":"Libsoup: libsoup: heap buffer overflow from websocket pong signal type confusion","id":"CVE-2026-102556","kev_date_added":null,"published":"2026-09-29"},{"cvss_score":8.6,"headline":"Libsoup: libsoup: heap buffer overflow during websocket message reassembly","id":"CVE-2026-102557","kev_date_added":null,"published":"2026-09-29"},{"cvss_score":8.6,"headline":"Libsoup: libsoup: heap buffer overflow during websocket receive-buffer growth","id":"CVE-2026-102558","kev_date_added":null,"published":"2026-09-29"},{"cvss_score":8.6,"headline":"Libsoup: libsoup: heap buffer overflow during websocket client-frame masking","id":"CVE-2026-102559","kev_date_added":null,"published":"2026-09-29"},{"cvss_score":8.6,"headline":"Libsoup: libsoup: heap buffer overflow during outgoing permessage-deflate buffer growth","id":"CVE-2026-102560","kev_date_added":null,"published":"2026-09-29"},{"cvss_score":8.2,"headline":"Libsoup: libsoup: heap buffer overflow via uninitialized length in data-uri base64 decoding","id":"CVE-2026-102555","kev_date_added":null,"published":"2026-09-29"},{"cvss_score":7.5,"headline":"Other in n/a","id":"CVE-2024-52530","kev_date_added":null,"published":"2024-11-11"}],"sources":[{"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-28","vendors":["Red Hat"]},"summary":"Attackers can capture proxy credentials when libsoup incorrectly sends Proxy-Authorization headers to destination servers over HTTPS tunnels.","url":"https://insights.sbomify.com/CVE-2026-66339/"}