{"answers":{"affected":"3 open source packages ship an affected version, including github.com/sigstore/fulcio. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22772 exists.","fix":"Upgrade github.com/sigstore/fulcio to 1.8.5 or later.","what":"CVE-2026-22772 is a medium-severity server-side request forgery vulnerability in sigstore fulcio, published on 12 Jan 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-2026-22772 and fix it if it is affected.\n\nWhat it is: CVE-2026-22772 is a medium-severity server-side request forgery vulnerability in sigstore fulcio, published on 12 Jan 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-2026-22772 exists.\n\nAffected packages and fixed versions:\n- github.com/sigstore/fulcio (Go): affected all versions; fixed in 1.8.5\n- github.com/sigstore/fulcio (Go): affected all versions; fixed in 1.8.5\n- github.com/sigstore/fulcio (Go): affected all versions; fixed in 1.8.5\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-2026-22772/ (Markdown: https://insights.sbomify.com/CVE-2026-22772/index.md)","id":"CVE-2026-22772","markdown":"https://insights.sbomify.com/CVE-2026-22772/index.md","name":"CVE-2026-22772","record":{"aliases":["CLEANSTART-2026-LN74162","CLEANSTART-2026-NY15561","DEBIAN-CVE-2026-22772","GHSA-59jp-pj84-45mr","GO-2026-4311","MINI-392x-774v-f573","MINI-3p4w-m66q-wc8v","MINI-47q3-hvq2-3cr4","MINI-52j5-78jc-jgc3","MINI-5m8v-x4gc-qf6h","MINI-5w7j-cp65-cg7v","MINI-6xc7-x6cg-9vgp","MINI-77g9-jw3g-fj29","MINI-9wcm-mqmc-7jgm","MINI-c34w-rh7w-x63c","MINI-f62w-xj5g-r84r","MINI-h2mq-whpp-727q","MINI-hgqj-jqpv-qqch","MINI-mjgh-xw58-xr2x","MINI-q7vr-39q9-6cvg","MINI-qgc8-69p4-7gx2","MINI-rp77-fv92-wjv9","MINI-v4rf-3x5f-8x3w","MINI-w4gq-82rw-3534","MINI-wg88-xmp6-m4jf","MINI-ww59-c7q4-jw2c","MINI-x482-4g5f-qvcq","MINI-x76v-f959-v749","MINI-xpp4-34hj-87w4","MINI-xqjw-jx9f-2fr8","UBUNTU-CVE-2026-22772","openSUSE-RU-2026:20161-1","openSUSE-SU-2026:10068-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["other"],"network_reachable":"yes","non_default_config":false,"product_category":"Fulcio certificate authority","requires_auth":"none","summary":"Attackers can bypass URL validation to trigger blind SSRF against internal services, enabling network probing without data exfiltration or state mutation.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"fulcio","vendor":"linuxfoundation"}],"cvss":{"score":5.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"description":"Fulcio is a certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Prior to 1.8.5, Fulcio's metaRegex() function uses unanchored regex, allowing attackers to bypass MetaIssuer URL validation and trigger SSRF to arbitrary internal services. Since the SSRF only can trigger GET requests, the request cannot mutate state. The response from the GET request is not returned to the caller so data exfiltration is not possible. A malicious actor could attempt to probe an internal network through Blind SSRF. This vulnerability is fixed in 1.8.5.","ecosystems":["Go","openSUSE:Leap 16.0","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":"Fulcio vulnerable to Server-Side Request Forgery (SSRF) via MetaIssuer Regex Bypass","id":"CVE-2026-22772","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":5,"n_references":2,"next":{"headline":"vLLM is vulnerable to DoS in Idefics3 vision models via image payload with ambiguous dimensions","id":"CVE-2026-22773"},"packages":[{"ecosystem":"Go","fixed":["1.8.5"],"introduced":["0"],"last_affected":[],"package":"github.com/sigstore/fulcio","purl":null,"source":"GHSA-59jp-pj84-45mr"},{"ecosystem":"Go","fixed":["1.8.5"],"introduced":["0"],"last_affected":[],"package":"github.com/sigstore/fulcio","purl":"pkg:golang/github.com/sigstore/fulcio","source":"GHSA-59jp-pj84-45mr"},{"ecosystem":"Go","fixed":["1.8.5"],"introduced":["0"],"last_affected":[],"package":"github.com/sigstore/fulcio","purl":"pkg:golang/github.com/sigstore/fulcio","source":"GO-2026-4311"},{"ecosystem":"openSUSE:Leap 16.0","fixed":["1.4.1-bp160.1.1"],"introduced":["0"],"last_affected":[],"package":"hauler","purl":"pkg:rpm/opensuse/hauler\u0026distro=openSUSE%20Leap%2016.0","source":"openSUSE-RU-2026:20161-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["1.4.1-1.1"],"introduced":["0"],"last_affected":[],"package":"hauler","purl":"pkg:rpm/opensuse/hauler\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:10068-1"}],"prev":{"headline":"Envoy Extension Policy lua scripts injection causes arbitrary command execution","id":"CVE-2026-22771"},"products":["fulcio"],"published":"2026-01-12","related":[{"cvss_score":7.5,"headline":"Fulcio allocates excessive memory during token parsing","id":"CVE-2025-66506","kev_date_added":null,"published":"2025-12-04"}],"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":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-12","vendors":["sigstore"]},"summary":"Attackers can bypass URL validation to trigger blind SSRF against internal services, enabling network probing without data exfiltration or state mutation.","url":"https://insights.sbomify.com/CVE-2026-22772/"}