{"answers":{"affected":"2 open source packages ship an affected version, including guzzlehttp/guzzle. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-59883 in the wild and no public exploit code.","fix":"Upgrade guzzlehttp/guzzle to 7.12.3 or later.","what":"CVE-2026-59883 is a medium-severity vulnerability in guzzle, published on 8 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-2026-59883 and fix it if it is affected.\n\nWhat it is: CVE-2026-59883 is a medium-severity vulnerability in guzzle, published on 8 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-2026-59883 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- guzzlehttp/guzzle (Packagist): affected all versions; fixed in 7.12.3\n- guzzlehttp/guzzle (Packagist): affected all versions; fixed in 7.12.3\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-2026-59883/ (Markdown: https://insights.sbomify.com/CVE-2026-59883/index.md)","id":"CVE-2026-59883","markdown":"https://insights.sbomify.com/CVE-2026-59883/index.md","name":"CVE-2026-59883","record":{"aliases":["DEBIAN-CVE-2026-59883","GHSA-g446-98w2-8p5w","MINI-6mxm-xrwg-7f3r","MINI-9fhr-8prm-x7q6","MINI-cq5g-g8p8-r42h","MINI-f7pp-9rv3-pwv2","MINI-hwfg-wgwx-c7mh","MINI-jvx7-6v4w-479c","MINI-p4fg-8qmj-9gh3","MINI-wm8p-794c-6v6f","MINI-xxpr-pxvg-7j6v","UBUNTU-CVE-2026-59883"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP HTTP client","requires_auth":"none","summary":"Attackers can disclose or inject cookies across different IP-address hosts due to improper domain matching in the Guzzle PHP HTTP client library.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"guzzle","vendor":"guzzlephp"}],"cvss":{"score":4.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-384","name":"Session Fixation"},{"id":"CWE-346","name":"Origin Validation Error"}],"description":"Guzzle is an extensible PHP HTTP client. Prior to 7.12.3, CookieJar did not restrict cookies scoped to IP-address or bare-numeric Domain values to the exact host that set them, because SetCookie::matchesDomain() applied ordinary suffix matching to domains such as 192.168.0.1, [::1], or 1, allowing cross-host cookie disclosure, cookie injection, or session fixation. This issue is fixed in version 7.12.3.","ecosystems":["Packagist"],"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":"Guzzle: Cookie Disclosure and Injection via IP-Address Domains","id":"CVE-2026-59883","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"pyasn1 BER/CER/DER decoder denial of service via unbounded long-form tag IDs","id":"CVE-2026-59884"},"packages":[{"ecosystem":"Packagist","fixed":["7.12.3"],"introduced":["0"],"last_affected":[],"package":"guzzlehttp/guzzle","purl":null,"source":"GHSA-g446-98w2-8p5w"},{"ecosystem":"Packagist","fixed":["7.12.3"],"introduced":["0"],"last_affected":[],"package":"guzzlehttp/guzzle","purl":"pkg:composer/guzzlehttp/guzzle","source":"GHSA-g446-98w2-8p5w"}],"prev":{"headline":"guzzlehttp/psr7: Host Confusion via Weak URI Host Validation","id":"CVE-2026-59882"},"products":["guzzle"],"published":"2026-07-08","related":[{"cvss_score":5.9,"headline":"Guzzle: Silent HTTPS-Proxy Downgrade to Cleartext","id":"CVE-2026-55568","kev_date_added":null,"published":"2026-06-23"},{"cvss_score":5.8,"headline":"Guzzle: Dot-Only Cookie Domains Match All Hosts in guzzlehttp/guzzle","id":"CVE-2026-55767","kev_date_added":null,"published":"2026-06-23"}],"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":"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":"2026-07-09","vendors":["guzzle"]},"summary":"Attackers can disclose or inject cookies across different IP-address hosts due to improper domain matching in the Guzzle PHP HTTP client library.","url":"https://insights.sbomify.com/CVE-2026-59883/"}