{"id":"CVE-2026-22181","aliases":["EUVD-2026-12728","GHSA-8mvx-p2r9-r375"],"status":"published","title":"OpenClaw \u003c 2026.3.2 - DNS Pinning Bypass via Environment Proxy Configuration in web_fetch","description":"OpenClaw versions prior to 2026.3.2 contain a DNS pinning bypass vulnerability in strict URL fetch paths that allows attackers to circumvent SSRF guards when environment proxy variables are configured. When HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY environment variables are present, attacker-influenced URLs can be routed through proxy behavior instead of pinned-destination routing, enabling access to internal targets reachable from the proxy environment.","severity":{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00248,"percentile":0.16278,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-367","CWE-918"],"published":"2026-03-03T21:19:47Z","modified":"2026-10-28T02:30:49Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.3.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2026.3.1"},{"fixed":"2026.3.2"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.3.2"}]}]}],"products":[{"vendor":"openclaw","product":"openclaw"}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-8mvx-p2r9-r375","tags":["vendor-advisory","Mitigation","Vendor Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/commit/345abf0b2e0f43b0f229e96f252ebf56f1e5549e","tags":["patch","Broken Link","fix","web"]},{"url":"https://www.vulncheck.com/advisories/openclaw-dns-pinning-bypass-via-environment-proxy-configuration-in-web-fetch","tags":["third-party-advisory","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22181","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-8mvx-p2r9-r375"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22181.json","tags":["advisory"]},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-22181","title":"OpenClaw \u003c 2026.3.2 - DNS Pinning Bypass via Environment Proxy Configuration in web_fetch","description":"OpenClaw versions prior to 2026.3.2 contain a DNS pinning bypass vulnerability in strict URL fetch paths that allows attackers to circumvent SSRF guards when environment proxy variables are configured. When HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY environment variables are present, attacker-influenced URLs can be routed through proxy behavior instead of pinned-destination routing, enabling access to internal targets reachable from the proxy environment.","status":"published","published":"2026-03-18T01:34:24.746Z","modified":"2026-06-23T16:13:51.811Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T13:39:05.585774Z"}],"euvd":[{"id":"EUVD-2026-12728","description":"OpenClaw versions prior to 2026.3.2 contain a DNS pinning bypass vulnerability in strict URL fetch paths that allows attackers to circumvent SSRF guards when environment proxy variables are configured. When HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY environment variables are present, attacker-influenced URLs can be routed through proxy behavior instead of pinned-destination routing, enabling access to internal targets reachable from the proxy environment.","status":"published","published":"2026-03-18T01:34:24Z","modified":"2026-06-23T16:13:51Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:20:32.768333Z"}],"ghsa":[{"id":"GHSA-8mvx-p2r9-r375","title":"OpenClaw's web tools strict URL guard could lose DNS pinning when env proxy is configured","description":"### Summary\n`openclaw` web tools strict URL fetch paths could lose DNS pinning when environment proxy variables are configured (`HTTP_PROXY`/`HTTPS_PROXY`/`ALL_PROXY`, including lowercase variants).\n\nIn affected builds, strict URL checks (for example `web_fetch` and citation redirect resolution) validated one destination during SSRF guard checks, but runtime connection routing could proceed through an env-proxy dispatcher.\n\n### Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Vulnerable version range: `\u003c= 2026.3.1`\n- Latest published npm version at triage time (2026-03-02): `2026.3.1`\n- Patched versions: `\u003e= 2026.3.2` (released)\n\n### Technical Details\nThe SSRF guard performed hostname resolution and policy checks, then selected a request dispatcher.\n\nWhen env proxy settings were present, strict web-tool flows could use `EnvHttpProxyAgent` instead of the DNS-pinned dispatcher. This created a destination-binding gap between check-time resolution and connect-time routing.\n\nThe fix keeps DNS pinning on strict/untrusted web-tool URL paths and limits env-proxy bypass behavior to trusted/operator-controlled endpoints via an explicit dangerous opt-in.\n\n### Impact\nIn deployments with env proxy variables configured, attacker-influenced URLs from web tools could be routed through proxy behavior instead of strict pinned-destination routing, which could allow access to internal/private targets reachable from that proxy environment.\n\n### Mitigations\nBefore upgrading, operators can reduce exposure by clearing proxy env vars for OpenClaw runtime processes or disabling `web_fetch` / `web_search` where untrusted URL input is possible.\n\n### Fix Commit(s)\n- `345abf0b2e0f43b0f229e96f252ebf56f1e5549e`","status":"published","published":"2026-03-03T21:19:47Z","modified":"2026-03-19T18:35:41Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-367","CWE-918"],"updated_at":"2026-11-02T14:39:38.524712Z"}],"nvd":[{"id":"CVE-2026-22181","description":"OpenClaw versions prior to 2026.3.2 contain a DNS pinning bypass vulnerability in strict URL fetch paths that allows attackers to circumvent SSRF guards when environment proxy variables are configured. When HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY environment variables are present, attacker-influenced URLs can be routed through proxy behavior instead of pinned-destination routing, enabling access to internal targets reachable from the proxy environment.","status":"published","published":"2026-03-18T02:16:22.8Z","modified":"2026-06-17T10:19:29.74Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:12:09.735529Z"}],"osv":[{"id":"CVE-2026-22181","title":"OpenClaw \u003c 2026.3.2 - DNS Pinning Bypass via Environment Proxy Configuration in web_fetch","description":"OpenClaw versions prior to 2026.3.2 contain a DNS pinning bypass vulnerability in strict URL fetch paths that allows attackers to circumvent SSRF guards when environment proxy variables are configured. When HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY environment variables are present, attacker-influenced URLs can be routed through proxy behavior instead of pinned-destination routing, enabling access to internal targets reachable from the proxy environment.","status":"published","published":"2026-03-18T01:34:24.746Z","modified":"2026-10-28T02:30:49.624873512Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:44:58.42038Z"},{"id":"GHSA-8mvx-p2r9-r375","title":"OpenClaw's web tools strict URL guard could lose DNS pinning when env proxy is configured","description":"### Summary\n`openclaw` web tools strict URL fetch paths could lose DNS pinning when environment proxy variables are configured (`HTTP_PROXY`/`HTTPS_PROXY`/`ALL_PROXY`, including lowercase variants).\n\nIn affected builds, strict URL checks (for example `web_fetch` and citation redirect resolution) validated one destination during SSRF guard checks, but runtime connection routing could proceed through an env-proxy dispatcher.\n\n### Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Vulnerable version range: `\u003c= 2026.3.1`\n- Latest published npm version at triage time (2026-03-02): `2026.3.1`\n- Patched versions: `\u003e= 2026.3.2` (released)\n\n### Technical Details\nThe SSRF guard performed hostname resolution and policy checks, then selected a request dispatcher.\n\nWhen env proxy settings were present, strict web-tool flows could use `EnvHttpProxyAgent` instead of the DNS-pinned dispatcher. This created a destination-binding gap between check-time resolution and connect-time routing.\n\nThe fix keeps DNS pinning on strict/untrusted web-tool URL paths and limits env-proxy bypass behavior to trusted/operator-controlled endpoints via an explicit dangerous opt-in.\n\n### Impact\nIn deployments with env proxy variables configured, attacker-influenced URLs from web tools could be routed through proxy behavior instead of strict pinned-destination routing, which could allow access to internal/private targets reachable from that proxy environment.\n\n### Mitigations\nBefore upgrading, operators can reduce exposure by clearing proxy env vars for OpenClaw runtime processes or disabling `web_fetch` / `web_search` where untrusted URL input is possible.\n\n### Fix Commit(s)\n- `345abf0b2e0f43b0f229e96f252ebf56f1e5549e`","status":"published","published":"2026-03-03T21:19:47Z","modified":"2026-03-19T18:47:06.272674Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-367","CWE-918"],"updated_at":"2026-11-02T15:46:42.437513Z"}]}}