{"answers":{"affected":"3 open source packages ship an affected version, including webob.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54770 exists.","fix":"Upgrade webob to 1.8.11 or later.","what":"CVE-2026-54770 is a medium-severity vulnerability in Pylons webob, published on 20 Aug 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-2026-54770 and fix it if it is affected.\n\nWhat it is: CVE-2026-54770 is a medium-severity vulnerability in Pylons webob, published on 20 Aug 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54770 exists.\n\nAffected packages and fixed versions:\n- webob (PyPI): affected all versions; fixed in 1.8.11\n- webob (PyPI): affected all versions; fixed in 1.8.11\n- webob (PyPI): affected all versions; fixed in 1.8.11\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-2026-54770/ (Markdown: https://insights.sbomify.com/CVE-2026-54770/index.md)","id":"CVE-2026-54770","markdown":"https://insights.sbomify.com/CVE-2026-54770/index.md","name":"CVE-2026-54770","record":{"aliases":["AZL-97575","DEBIAN-CVE-2026-54770","ECHO-89e1-36b7-43be","GHSA-6hx8-3wjj-gr8g","MINI-5p93-m7xx-77vp","PYSEC-2026-3943","SUSE-SU-2026:4351-1","SUSE-SU-2026:4765-1","UBUNTU-CVE-2026-54770","openSUSE-SU-2026:11864-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Python HTTP library","requires_auth":"none","summary":"An attacker can bypass redirect validation to send users to malicious sites, enabling phishing or token theft in applications using WebOb.","user_interaction":"required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.1,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-601","name":"URL Redirection to Untrusted Site"}],"description":"WebOb provides objects for HTTP requests and responses. Prior to 1.8.11, Response._make_location_absolute() in src/webob/response.py checks a Location value for a URI scheme or leading double slash before urllib.parse.urljoin() strips leading C0 control characters and spaces. An attacker-controlled value such as a space followed by a protocol-relative or absolute URL can therefore bypass SCHEME_RE and startswith(\"//\") checks and be normalized to an off-host redirect. Request.relative_url() and webob.exc._HTTPMove subclasses, including HTTPFound, are also affected because they use the same unsafe URL joining behavior or bypass the earlier normalization path. An unauthenticated attacker who can influence an application's redirect target can send users to an attacker-controlled host for phishing or OAuth and SSO token theft, but exploitation requires the user to follow the redirect. This issue is fixed in version 1.8.11.","ecosystems":["PyPI","SUSE:Linux Enterprise Module for Basesystem 15 SP7","SUSE:Linux Enterprise Module for Package Hub 15 SP7","SUSE:Linux Enterprise Module for Public Cloud 12","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"WebOb: Open redirect in Location header normalization via leading C0 control / space characters","id":"CVE-2026-54770","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"open_redirect","year":"2026"},"n_packages":7,"n_references":3,"next":{"headline":"Langroid: handle_message() executes user-supplied tool JSON without sender verification","id":"CVE-2026-54771"},"packages":[{"ecosystem":"PyPI","fixed":["1.8.11"],"introduced":["0"],"last_affected":[],"package":"webob","purl":null,"source":"GHSA-6hx8-3wjj-gr8g"},{"ecosystem":"PyPI","fixed":["1.8.11"],"introduced":["0"],"last_affected":[],"package":"webob","purl":"pkg:pypi/webob","source":"GHSA-6hx8-3wjj-gr8g"},{"ecosystem":"PyPI","fixed":["1.8.11"],"introduced":["0"],"last_affected":[],"package":"webob","purl":"pkg:pypi/webob","source":"PYSEC-2026-3943"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP7","fixed":["1.7.4-150000.3.9.1"],"introduced":["0"],"last_affected":[],"package":"python-WebOb","purl":"pkg:rpm/suse/python-WebOb\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7","source":"SUSE-SU-2026:4765-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Package Hub 15 SP7","fixed":["1.7.4-150000.3.9.1"],"introduced":["0"],"last_affected":[],"package":"python-WebOb","purl":"pkg:rpm/suse/python-WebOb\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7","source":"SUSE-SU-2026:4765-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Public Cloud 12","fixed":["1.2.3-3.6.1"],"introduced":["0"],"last_affected":[],"package":"python-WebOb","purl":"pkg:rpm/suse/python-WebOb\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2012","source":"SUSE-SU-2026:4351-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["1.8.11-1.1"],"introduced":["0"],"last_affected":[],"package":"python-WebOb","purl":"pkg:rpm/opensuse/python-WebOb\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:11864-1"}],"prev":{"headline":"Langroid: Sandbox Escape to Remote Code Execution via Incomplete `eval()` Mitigation in TableChatAgent","id":"CVE-2026-54769"},"products":["webob"],"published":"2026-08-20","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":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2026-08-25","vendors":["Pylons"]},"summary":"An attacker can bypass redirect validation to send users to malicious sites, enabling phishing or token theft in applications using WebOb.","url":"https://insights.sbomify.com/CVE-2026-54770/"}